2012 Kia Optima Electrical Switch & Relay Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

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.

A/C Pressure Safety Switch

Brand Part Number Markets Notes Buy
VEMO Fits: 2.4L L4 ELECTRIC/GAS V52730034
🇺🇸 US 🇨🇦 CA
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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.

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
Fitment notes — FOUR SEASONS 37324
Pressure Switch
Transducer
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UAC Popular Fits: 2.4L L4 ELECTRIC/GAS SW9969C
🇺🇸 US 🇨🇦 CA
Pressure Transducer
Fitment notes — UAC SW9969C
Pressure Transducer
Transducer
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FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS 1802492322
🇺🇸 US 🇨🇦 CA
Compressor Cut-Off Switch
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GPD Fits: 2.4L L4 ELECTRIC/GAS 1711756
🇺🇸 US 🇨🇦 CA
Pressure Transducer
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HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 9775238000
🇺🇸 US 🇨🇦 CA
At Receiver Drier
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HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 977213K000
🇺🇸 US
Included with liquid line, suction tube, hose & tube assembly, pressure line assembly
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS PCS195
🇺🇸 US 🇨🇦 CA
Low PressureCut-Off
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 5S16579
🇺🇸 US 🇨🇦 CA
CUT-OFF
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S9347
🇺🇸 US 🇨🇦 CA
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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.

A/C Thermo Switch

Brand Part Number Markets Notes Buy
GPD Fits: 2.4L L4 ELECTRIC/GAS 1713006
🇺🇸 US 🇨🇦 CA
Korean Built
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GPD Fits: 2.4L L4 ELECTRIC/GAS 1713007
🇺🇸 US 🇨🇦 CA
For vehicle built in USA
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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.

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
Fitment notes — ROSTRA 600003
Amperage Rating: 40 AmpereConnector Gender: MaleConnector Shape: SquareMounting Bracket Included: NoTerminal Type: Blade
40 Amp
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WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS 1R1061
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1061
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Bracket Included: NoMounting Hardware Included: NoTerminal Quantity: 5Terminal Type: Blade
with 5 Terminals
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600084
🇺🇸 US 🇨🇦 CA
35 Ampswith 4 Blade Terminals
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600106
🇺🇸 US 🇨🇦 CA
20 Amps
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600216
🇺🇸 US 🇨🇦 CA
30 Amps
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RY1993
🇺🇸 US 🇨🇦 CA
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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.

Adjustable Shock / Load Leveler Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RY2003
🇺🇸 US 🇨🇦 CA
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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.

Back Up / Reverse Lamp Switch

Brand Part Number Markets Notes Buy
HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 9386049600
🇺🇸 US
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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.

Blower Motor Relay

Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS 2RSW0005
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600084
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RY1614
🇺🇸 US 🇨🇦 CA
Functions: Multi-Function Relay
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3545
🇺🇸 US 🇨🇦 CA
Connector Gender: MaleMounting Hardware Included: No
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
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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.

Brake Light Switch

Economy

Brand Part Number Markets Notes Buy
FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS SBA1065
🇺🇸 US 🇨🇦 CA
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS SLS514
🇺🇸 US 🇨🇦 CA
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WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS 1S11812
🇺🇸 US 🇨🇦 CA
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BECK/ARNLEY Fits: 2.4L L4 ELECTRIC/GAS 2012743
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 620020
🇺🇸 US 🇨🇦 CA
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VEMO Fits: 2.4L L4 ELECTRIC/GAS V53730006
🇺🇸 US 🇨🇦 CA
Plug (Connector): 4 Pins
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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.

Clutch Pedal Position / Starter Safety Switch

Brand Part Number Markets Notes Buy
HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 938402E000
🇺🇸 US
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS NS300
🇺🇸 US 🇨🇦 CA
with Manual Shift
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S5779
🇺🇸 US 🇨🇦 CA
Connector Color: WhiteWiring Harness Length: 2.62 In
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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.

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
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3525
🇺🇸 US 🇨🇦 CA
Voltage: 12.0 2H
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3545
🇺🇸 US 🇨🇦 CA
Connector Gender: MaleMounting Hardware Included: No
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
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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.

Dimmer Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS CBS2017
🇺🇸 US 🇨🇦 CA
Includes Headlight Switch
Fitment notes — STANDARD MOTOR PRODUCTS CBS2017
Includes Headlight Switch
without Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11350
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswithout Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11351
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswith Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11353
🇺🇸 US 🇨🇦 CA
with Automatic Headlights, with or without Fog Lights
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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.

Fog / Driving Lamp Switch

Brand Part Number Markets Notes Buy
WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11351
🇺🇸 US 🇨🇦 CA
without Automatic Headlights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11353
🇺🇸 US 🇨🇦 CA
with automatic headlights
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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.

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
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3545
🇺🇸 US 🇨🇦 CA
Connector Gender: MaleMounting Hardware Included: No
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
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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.

Headlamp Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS CBS2017
🇺🇸 US 🇨🇦 CA
Includes Headlight Switch
Fitment notes — STANDARD MOTOR PRODUCTS CBS2017
Includes Headlight Switch
without Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11350
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswithout Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11351
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswith Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11353
🇺🇸 US 🇨🇦 CA
with Automatic Headlights, with or without Fog Lights
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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.

Ignition Relay

Brand Part Number Markets Notes Buy
ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600084
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3545
🇺🇸 US 🇨🇦 CA
Connector Gender: MaleMounting Hardware Included: No
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
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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.

Ignition Starter Switch

Brand Part Number Markets Notes Buy
ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 630103
🇺🇸 US 🇨🇦 CA
Keyed Ignition Switch
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 780022
🇺🇸 US 🇨🇦 CA
Push Button Startblack
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS US1010
🇺🇸 US 🇨🇦 CA
without Housing
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S12929
🇺🇸 US 🇨🇦 CA
Black
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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.

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
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
with 4 Terminals
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3525
🇺🇸 US 🇨🇦 CA
Voltage: 12.0 2H
Fitment notes — WELLS 1R3525
Voltage: 12.0 2H
with 4 TerminalsGreen
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3524
🇺🇸 US 🇨🇦 CA
with 5 Terminal(s)10/20 Amps
Fitment notes — WELLS 1R3524
with 5 Terminal(s)10/20 Ampswith Stamping # 95230-2P040
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3581
🇺🇸 US 🇨🇦 CA
with 5 TerminalsBrown
Fitment notes — WELLS 1R3581
with 5 TerminalsBrownwith Stamping # 95230-2P050
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3582
🇺🇸 US 🇨🇦 CA
with 5 TerminalsBlack
Fitment notes — WELLS 1R3582
with 5 TerminalsBlackwith Stamping # 39160-2G000
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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.

Neutral Safety Switch / Range Sensor

Brand Part Number Markets Notes Buy
ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 670591
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS NS666
🇺🇸 US 🇨🇦 CA
Finish: Cast Iron, PlasticMaterial: Plastic, Metal
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS NS623
🇺🇸 US 🇨🇦 CA
Finish: Aluminum, Plastic
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11382
🇺🇸 US 🇨🇦 CA
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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.

Oil Pressure Sender / Switch

Economy

Brand Part Number Markets Notes Buy
AUTOTECNICA Fits: 2.4L L4 ELECTRIC/GAS HY1322212
🇺🇸 US 🇨🇦 CA
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HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS 2OPS0001
🇺🇸 US 🇨🇦 CA
with Light
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS PS411T
🇺🇸 US 🇨🇦 CA
T-Series
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UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS OPS189
🇺🇸 US 🇨🇦 CA
Long Designwith Light
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VEMO Fits: 2.4L L4 ELECTRIC/GAS V527300021
🇺🇸 US 🇨🇦 CA
Pressure [Bar]: 0.3
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WALKER PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS 2561059
🇺🇸 US 🇨🇦 CA
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
BECK/ARNLEY Popular Fits: 2.4L L4 ELECTRIC/GAS 2011771
🇺🇸 US 🇨🇦 CA
with Light
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HELLA Popular Fits: 2.4L L4 ELECTRIC/GAS 009600251
🇺🇸 US 🇨🇦 CA
1-Pin Connector
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STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS PS411
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 1Terminal Type: Blade
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FACET Fits: 2.4L L4 ELECTRIC/GAS 70195
🇺🇸 US 🇨🇦 CA
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GPD Fits: 2.4L L4 ELECTRIC/GAS 1815237
🇺🇸 US 🇨🇦 CA
View on
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HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 9475037000
🇺🇸 US 🇨🇦 CA
View on
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 501242
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S6857
🇺🇸 US 🇨🇦 CA
View on
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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.

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
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS PBS126
🇺🇸 US 🇨🇦 CA
8 Terminal. Male
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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.

Power Window Switch

Brand Part Number Markets Notes Buy
WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS 1S13763
🇺🇸 US 🇨🇦 CA
Fits Rearwith Heated Seats
Fitment notes — WELLS 1S13763
Fits:
Rearwith Heated Seats
or:
Rear Leftwith Heated Seats
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WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS 1S16409
🇺🇸 US 🇨🇦 CA
Front Leftwith Passenger Side One-Touch Open Window
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS DWS2320
🇺🇸 US 🇨🇦 CA
Rearwith Heated Seats
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS DWS1978
🇺🇸 US 🇨🇦 CA
Front Leftwith One Touch Window Open/Close
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS DWS1979
🇺🇸 US 🇨🇦 CA
Front Leftwith Driver Auto Down
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S13734
🇺🇸 US 🇨🇦 CA
Front Rightwith One-Touch Open Windows
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S16408
🇺🇸 US 🇨🇦 CA
Front Leftwithout Passenger Side One-Touch Open Window
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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.

Rear Window Wiper Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RY1852
🇺🇸 US 🇨🇦 CA
Functions: Relay
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RY1614
🇺🇸 US 🇨🇦 CA
Functions: Multi-Function Relay
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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.

Starter Motor Control Relay

Brand Part Number Markets Notes Buy
FAMOUS BRAND Popular Fits: 2.4L L4 ELECTRIC/GAS 1802511331
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS RY266
🇺🇸 US 🇨🇦 CA
View on
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BWD/NIEHOFF Fits: 2.4L L4 ELECTRIC/GAS R4152
🇺🇸 US 🇨🇦 CA
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FAMOUS BRAND Fits: 2.4L L4 ELECTRIC/GAS RAA1545
🇺🇸 US 🇨🇦 CA
View on
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600431
🇺🇸 US 🇨🇦 CA
View on
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UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS RLY61
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R1394
🇺🇸 US 🇨🇦 CA
Universal RelayFor Pigtail Connector Use 1P1212, 40 Amp
Fitment notes — WELLS 1R1394
Universal RelayFor Pigtail Connector Use 1P1212, 40 Amp12 Volt.
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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.

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
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HYUNDAI Fits: 2.4L L4 ELECTRIC/GAS 934102M115
🇺🇸 US 🇨🇦 CA
with Auto Headlampswith Fog Lamps
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STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS CBS2017
🇺🇸 US 🇨🇦 CA
Includes Headlight Switch
Fitment notes — STANDARD MOTOR PRODUCTS CBS2017
Includes Headlight Switch
without Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11350
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswithout Fog Lights
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11351
🇺🇸 US 🇨🇦 CA
without Automatic Headlightswith Fog Lights
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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.

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
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS WP535
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1S11374
🇺🇸 US 🇨🇦 CA
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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.

Wiper Motor Relay

Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS 2RSW0005
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 2.4L L4 ELECTRIC/GAS 600084
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 2.4L L4 ELECTRIC/GAS 1R3545
🇺🇸 US 🇨🇦 CA
Connector Gender: MaleMounting Hardware Included: No
Fitment notes — WELLS 1R3545
Connector Gender: MaleMounting Hardware Included: NoTerminal Quantity: 4Voltage: 12.0 VDC
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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.

Wiring Relay

Brand Part Number Markets Notes Buy
HELLA Fits: 2.4L L4 ELECTRIC/GAS 933332531
🇺🇸 US 🇨🇦 CA
4-Pin ConnectorPlug: B
Fitment notes — HELLA 933332531
4-Pin ConnectorPlug: BColor: Black
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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.

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.