The 2012 Kia Optima has 107 electrical switch & relay parts with verified fitment on this page — 27 part types and 17 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part includes a manufacturer part number and application notes.
On the 2012 Kia Optima, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Oil Pressure Sender / Switch (14 parts), A/C Refrigerant Pressure Switch (9 parts) and Power Window Switch (7 parts). The other 24 part types cover the remaining 77 parts.
The 2012 Kia Optima was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2012 Kia Optima electrical switch & relay parts are WELLS (37 parts), STANDARD MOTOR PRODUCTS (24 parts) and ROSTRA (13 parts), plus 14 more brands. Quality grades include Standard Replacement and Economy.
15 parts on this 2012 Kia Optima page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FOUR SEASONS 37324 (A/C Refrigerant Pressure Switch) and ROSTRA 600003 (Accessory Power Relay). Click any part number to see every vehicle that part fits.
A/C Pressure Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 2.4L L4 ELECTRIC/GAS | V52730034 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the A/C Pressure Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2012 Kia Optima — VEMO V52730034.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Popular Fits: 2.4L L4 ELECTRIC/GAS | 37324 | 🇺🇸 US 🇨🇦 CA | Pressure Switch | View on Amazon |
| UAC Popular Fits: 2.4L L4 ELECTRIC/GAS | SW9969C | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS | 1802492322 | 🇺🇸 US 🇨🇦 CA | Compressor Cut-Off Switch | View on Amazon |
| GPD Fits: 2.4L L4 ELECTRIC/GAS | 1711756 | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 9775238000 | 🇺🇸 US 🇨🇦 CA | At Receiver Drier | View on Amazon |
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 977213K000 | 🇺🇸 US | Included with liquid line, suction tube, hose & tube assembly, pressure line assembly | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | PCS195 | 🇺🇸 US 🇨🇦 CA | Low PressureCut-Off | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 5S16579 | 🇺🇸 US 🇨🇦 CA | CUT-OFF | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S9347 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 A/C Refrigerant Pressure Switch parts for the 2012 Kia Optima come from 7 brands — HYUNDAI, WELLS, FOUR SEASONS and 4 other brands. The "Popular" part is FOUR SEASONS 37324.
This group includes FOUR SEASONS 37324, UAC SW9969C and FAMOUS BRAND 1802492322 and the remaining parts above.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 2.4L L4 ELECTRIC/GAS | 1713006 | 🇺🇸 US 🇨🇦 CA | Korean Built | View on Amazon |
| GPD Fits: 2.4L L4 ELECTRIC/GAS | 1713007 | 🇺🇸 US 🇨🇦 CA | For vehicle built in USA | View on Amazon |
This table covers the A/C Thermo switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
GPD supplies both parts for the 2012 Kia Optima.
Listed part numbers: GPD 1713006 and GPD 1713007.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Popular Fits: 2.4L L4 ELECTRIC/GAS | 600003 | 🇺🇸 US 🇨🇦 CA | Amperage Rating: 40 AmpereConnector Gender: Male | View on Amazon |
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1R1061 | 🇺🇸 US 🇨🇦 CA | Amperage Rating: 40 AConnector Gender: Male | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600084 | 🇺🇸 US 🇨🇦 CA | 35 Ampswith 4 Blade Terminals | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600106 | 🇺🇸 US 🇨🇦 CA | 20 Amps | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600216 | 🇺🇸 US 🇨🇦 CA | 30 Amps | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY1993 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
6 Accessory Power Relay parts are listed for the 2012 Kia Optima, from ROSTRA, WELLS and STANDARD MOTOR PRODUCTS. ROSTRA 600003 carries the "Popular" badge.
Part numbers include ROSTRA 600003, WELLS 1R1061 and ROSTRA 600084, among others listed above.
Adjustable Shock / Load Leveler Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY2003 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Adjustable Shock / Load Leveler circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS RY2003.
Back Up / Reverse Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 9386049600 | 🇺🇸 US | View on Amazon |
This table covers the Back Up / Reverse Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: HYUNDAI 9386049600.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS | 2RSW0005 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600084 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY1614 | 🇺🇸 US 🇨🇦 CA | Functions: Multi-Function Relay | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Blower Motor Relay parts for the 2012 Kia Optima come from 4 brands — HOLSTEIN, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.
Listed part numbers: HOLSTEIN 2RSW0005, ROSTRA 600084 and STANDARD MOTOR PRODUCTS RY1614, plus the other parts above.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS | SBA1065 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | SLS514 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1S11812 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: 2.4L L4 ELECTRIC/GAS | 2012743 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 620020 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VEMO Fits: 2.4L L4 ELECTRIC/GAS | V53730006 | 🇺🇸 US 🇨🇦 CA | Plug (Connector): 4 Pins | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
6 Brake Light Switch parts for the 2012 Kia Optima come from 6 brands — FAMOUS BRAND, STANDARD MOTOR PRODUCTS, WELLS and 3 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS SLS514.
The Economy section lists 1 option from FAMOUS BRAND — the catalog's value-priced group. FAMOUS BRAND SBA1065 is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, WELLS, BECK/ARNLEY and 2 other brands supply 5 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS SLS514.
Part numbers include STANDARD MOTOR PRODUCTS SLS514, FAMOUS BRAND SBA1065 and WELLS 1S11812, among others listed above.
Clutch Pedal Position / Starter Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 938402E000 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | NS300 | 🇺🇸 US 🇨🇦 CA | with Manual Shift | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S5779 | 🇺🇸 US 🇨🇦 CA | Connector Color: WhiteWiring Harness Length: 2.62 In | View on Amazon |
This table covers the Clutch Pedal Position / Starter Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Clutch Pedal Position / Starter Safety Switch parts are listed for the 2012 Kia Optima, from HYUNDAI, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: HYUNDAI 938402E000, STANDARD MOTOR PRODUCTS NS300 and WELLS 1S5779.
Computer Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY637 | 🇺🇸 US 🇨🇦 CA | Functions: Fuel Pump Relay | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3525 | 🇺🇸 US 🇨🇦 CA | Voltage: 12.0 2H | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Computer Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 Computer Control Relay parts for the 2012 Kia Optima come from 2 brands — WELLS and STANDARD MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS RY637, WELLS 1R3525 and WELLS 1R3545.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CBS2017 | 🇺🇸 US 🇨🇦 CA | Includes Headlight Switch | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11350 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11351 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswith Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11353 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlights, with or without Fog Lights | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Dimmer Switch parts are listed for the 2012 Kia Optima, from WELLS and STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS CBS2017, WELLS 1S11350 and WELLS 1S11351 and the remaining parts above.
Fog / Driving Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11351 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11353 | 🇺🇸 US 🇨🇦 CA | with automatic headlights | View on Amazon |
This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
WELLS supplies both parts for the 2012 Kia Optima.
This group includes WELLS 1S11351 and WELLS 1S11353.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R1848 | 🇺🇸 US 🇨🇦 CA | Voltage: 12.0 2H | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Fuel Pump / Circuit Opening Relay parts for the 2012 Kia Optima come from WELLS.
Part numbers include WELLS 1R1848 and WELLS 1R3545.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CBS2017 | 🇺🇸 US 🇨🇦 CA | Includes Headlight Switch | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11350 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11351 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswith Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11353 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlights, with or without Fog Lights | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Headlamp Switch parts are listed for the 2012 Kia Optima, from WELLS and STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS CBS2017, WELLS 1S11350 and WELLS 1S11351 and the remaining parts above.
Ignition Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600084 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Ignition circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Ignition Relay parts are listed for the 2012 Kia Optima, from ROSTRA and WELLS.
Part numbers include ROSTRA 600084 and WELLS 1R3545.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 630103 | 🇺🇸 US 🇨🇦 CA | Keyed Ignition Switch | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 780022 | 🇺🇸 US 🇨🇦 CA | Push Button Startblack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | US1010 | 🇺🇸 US 🇨🇦 CA | without Housing | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S12929 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Ignition Starter Switch parts are listed for the 2012 Kia Optima, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes ROSTRA 630103, ROSTRA 780022 and STANDARD MOTOR PRODUCTS US1010 and the remaining parts above.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3525 | 🇺🇸 US 🇨🇦 CA | Voltage: 12.0 2H | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3524 | 🇺🇸 US 🇨🇦 CA | with 5 Terminal(s)10/20 Amps | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3581 | 🇺🇸 US 🇨🇦 CA | with 5 TerminalsBrown | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3582 | 🇺🇸 US 🇨🇦 CA | with 5 TerminalsBlack | View on Amazon |
This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Multi-Function Relay parts for the 2012 Kia Optima come from WELLS. The "Popular" part is WELLS 1R3545.
This group includes WELLS 1R3545, WELLS 1R3525 and WELLS 1R3524 and the remaining parts above.
Neutral Safety Switch / Range Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 670591 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | NS666 | 🇺🇸 US 🇨🇦 CA | Finish: Cast Iron, PlasticMaterial: Plastic, Metal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | NS623 | 🇺🇸 US 🇨🇦 CA | Finish: Aluminum, Plastic | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11382 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
4 Neutral Safety Switch / Range Sensor parts for the 2012 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, ROSTRA and WELLS.
Part numbers include ROSTRA 670591, STANDARD MOTOR PRODUCTS NS666 and STANDARD MOTOR PRODUCTS NS623, among others listed above.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 2.4L L4 ELECTRIC/GAS | HY1322212 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS | 2OPS0001 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | PS411T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | OPS189 | 🇺🇸 US 🇨🇦 CA | Long Designwith Light | View on Amazon |
| VEMO Fits: 2.4L L4 ELECTRIC/GAS | V527300021 | 🇺🇸 US 🇨🇦 CA | Pressure [Bar]: 0.3 | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | 2561059 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular Fits: 2.4L L4 ELECTRIC/GAS | 2011771 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| HELLA Popular Fits: 2.4L L4 ELECTRIC/GAS | 009600251 | 🇺🇸 US 🇨🇦 CA | 1-Pin Connector | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | PS411 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 1Terminal Type: Blade | View on Amazon |
| FACET Fits: 2.4L L4 ELECTRIC/GAS | 70195 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 2.4L L4 ELECTRIC/GAS | 1815237 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 9475037000 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 501242 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S6857 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
14 Oil Pressure Sender / Switch parts for the 2012 Kia Optima come from 13 brands — STANDARD MOTOR PRODUCTS, AUTOTECNICA, HOLSTEIN and 10 other brands. The "Popular" part is BECK/ARNLEY 2011771.
The Economy section: 6 options from AUTOTECNICA, HOLSTEIN, STANDARD MOTOR PRODUCTS and 3 other brands. AUTOTECNICA HY1322212 is listed in this group.
Standard Replacement: 8 parts, from BECK/ARNLEY, HELLA, STANDARD MOTOR PRODUCTS and 5 other brands. A representative part number is BECK/ARNLEY 2011771.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | DS3405 | 🇺🇸 US 🇨🇦 CA | with 2 Female Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | PBS126 | 🇺🇸 US 🇨🇦 CA | 8 Terminal. Male | View on Amazon |
This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Parking Brake Switch parts for the 2012 Kia Optima come from STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS DS3405 and STANDARD MOTOR PRODUCTS PBS126.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1S13763 | 🇺🇸 US 🇨🇦 CA | Fits Rearwith Heated Seats | View on Amazon |
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1S16409 | 🇺🇸 US 🇨🇦 CA | Front Leftwith Passenger Side One-Touch Open Window | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | DWS2320 | 🇺🇸 US 🇨🇦 CA | Rearwith Heated Seats | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | DWS1978 | 🇺🇸 US 🇨🇦 CA | Front Leftwith One Touch Window Open/Close | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | DWS1979 | 🇺🇸 US 🇨🇦 CA | Front Leftwith Driver Auto Down | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S13734 | 🇺🇸 US 🇨🇦 CA | Front Rightwith One-Touch Open Windows | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S16408 | 🇺🇸 US 🇨🇦 CA | Front Leftwithout Passenger Side One-Touch Open Window | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
7 Power Window Switch parts for the 2012 Kia Optima come from 2 brands — WELLS and STANDARD MOTOR PRODUCTS. The "Popular" part is WELLS 1S13763.
This group includes WELLS 1S13763, WELLS 1S16409 and STANDARD MOTOR PRODUCTS DWS2320 and the remaining parts above.
Rear Window Wiper Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY1852 | 🇺🇸 US 🇨🇦 CA | Functions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RY1614 | 🇺🇸 US 🇨🇦 CA | Functions: Multi-Function Relay | View on Amazon |
This table covers the relays that control the Rear Window Wiper circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
STANDARD MOTOR PRODUCTS supplies both parts for the 2012 Kia Optima.
Part numbers include STANDARD MOTOR PRODUCTS RY1852 and STANDARD MOTOR PRODUCTS RY1614.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Popular Fits: 2.4L L4 ELECTRIC/GAS | 1802511331 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | RY266 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BWD/NIEHOFF Fits: 2.4L L4 ELECTRIC/GAS | R4152 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS | RAA1545 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600431 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | RLY61 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R1394 | 🇺🇸 US 🇨🇦 CA | Universal RelayFor Pigtail Connector Use 1P1212, 40 Amp | View on Amazon |
This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
7 Starter Motor Control Relay parts are listed for the 2012 Kia Optima, from FAMOUS BRAND, STANDARD MOTOR PRODUCTS, BWD/NIEHOFF and 3 other brands. FAMOUS BRAND 1802511331 carries the "Popular" badge.
This group includes FAMOUS BRAND 1802511331, STANDARD MOTOR PRODUCTS RY266 and BWD/NIEHOFF R4152 and the remaining parts above.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1S11353 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlights, with or without Fog Lights | View on Amazon |
| HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS | 934102M115 | 🇺🇸 US 🇨🇦 CA | with Auto Headlampswith Fog Lamps | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CBS2017 | 🇺🇸 US 🇨🇦 CA | Includes Headlight Switch | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11350 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11351 | 🇺🇸 US 🇨🇦 CA | without Automatic Headlightswith Fog Lights | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Turn Signal Switch parts for the 2012 Kia Optima come from 3 brands — WELLS, HYUNDAI and STANDARD MOTOR PRODUCTS. The "Popular" part is WELLS 1S11353.
This group includes WELLS 1S11353, HYUNDAI 934102M115 and STANDARD MOTOR PRODUCTS CBS2017 and the remaining parts above.
Wiper / Washer Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 2.4L L4 ELECTRIC/GAS | HY1322324 | 🇺🇸 US 🇨🇦 CA | Terminal Type: Blade PinWiring Harness Length: 450mm | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | WP535 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1S11374 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Wiper / Washer Switch parts are listed for the 2012 Kia Optima, from AUTOTECNICA, STANDARD MOTOR PRODUCTS and WELLS.
Economy: 1 part, from AUTOTECNICA. A representative part number is AUTOTECNICA HY1322324.
The Standard Replacement section: 2 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS WP535 is listed in this group.
Part numbers include AUTOTECNICA HY1322324, STANDARD MOTOR PRODUCTS WP535 and WELLS 1S11374.
Wiper Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS | 2RSW0005 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 600084 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1R3545 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Wiper Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 Wiper Motor Relay parts for the 2012 Kia Optima come from 3 brands — HOLSTEIN, ROSTRA and WELLS.
Part numbers include HOLSTEIN 2RSW0005, ROSTRA 600084 and WELLS 1R3545.
Wiring Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.4L L4 ELECTRIC/GAS | 933332531 | 🇺🇸 US 🇨🇦 CA | 4-Pin ConnectorPlug: B | View on Amazon |
This table covers the relays that control the Wiring circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: HELLA 933332531.
Buying Electrical Switch & Relay Parts for a 2012 Kia Optima
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Every electrical switch & relay part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Oil Pressure Sender / Switch and A/C Refrigerant Pressure Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2012 Kia Optima?
Our catalog currently lists 107 electrical switch & relay parts for the 2012 Kia Optima across 27 subcategories and 17 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2012 Kia Optima engines?
Yes. Every electrical switch & relay part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 2012 Kia Optima?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2012 Kia Optima was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2012 Kia Optima?
First match the engine — each row shows which engine(s) the part fits. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2012 Kia Optima
Electrical Switch & Relay Parts for Other Kia Optima Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.