22 Electrical switch & relay parts are listed for the 2021 Kia Sorento, in 9 part types, covering all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
The switch and relay system on the 2021 Kia Sorento covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Oil Pressure Sender / Switch (5 parts), Accessory Power Relay (4 parts) and Brake Light Switch (4 parts). The other 6 part types cover the remaining 9 parts.
The 2021 Kia Sorento was sold with 3 engines. 20 parts fit every engine; the other 2 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Kia Sorento electrical switch & relay parts are STANDARD MOTOR PRODUCTS (6 parts), WELLS (6 parts) and VEMO (3 parts), plus 5 more brands.
1 part on this 2021 Kia Sorento page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — WELLS 1S6857 (Oil Pressure Sender / Switch). Click any part number to see every vehicle that part fits.
A/C Pressure Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: all 2021 Sorento engines | V52730043 | 🇺🇸 US 🇨🇦 CA | FR Cooler - Dual Full Auto A/CDouble Pipe IHX | 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 2021 Kia Sorento — VEMO V52730043.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: all 2021 Sorento engines | 97721D2000 | 🇺🇸 US | Included with suction tube, hose & tube assembly. | View on Amazon |
| UAC Fits: all 2021 Sorento engines | SW9969C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | 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.
2 A/C Refrigerant Pressure Switch parts for the 2021 Kia Sorento come from 2 brands — HYUNDAI and UAC. Every part fits all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged).
Part numbers include HYUNDAI 97721D2000 and UAC SW9969C.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KIA Fits: all 2021 Sorento engines | 952302P040 | 🇺🇸 US | Micro-iso 5p 20aType 3 or Type 2 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | RY1850 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | In Engine Compartmentwith 4 Blade Terminals | View on Amazon |
| WELLS Fits: all 2021 Sorento engines | 1R3545 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
| WELLS Fits: all 2021 Sorento engines | 1R2271 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with 4 Blade TerminalsOmron Relay | 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.
4 Accessory Power Relay parts are listed for the 2021 Kia Sorento, from WELLS, KIA and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Sorento.
This group includes KIA 952302P040, STANDARD MOTOR PRODUCTS RY1850 and WELLS 1R3545 and the remaining parts above.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: all 2021 Sorento engines | 93810G8100 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | SLS605 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: all 2021 Sorento engines | V52730054 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: all 2021 Sorento engines | 1S16380 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Brake Light Switch parts for the 2021 Kia Sorento come from 4 brands — HYUNDAI, STANDARD MOTOR PRODUCTS, VEMO and 1 other brand. Every part fits all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged).
Listed part numbers: HYUNDAI 93810G8100, STANDARD MOTOR PRODUCTS SLS605 and VEMO V52730054, plus the other parts above.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | US1518 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | DASH MOUNTED | 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.
One part is listed for the 2021 Kia Sorento — STANDARD MOTOR PRODUCTS US1518.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2021 Sorento engines | 1R3545 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
| WELLS Fits: all 2021 Sorento engines | 1R2271 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with 4 Blade TerminalsOmron Relay | 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.
2 Multi-Function Relay parts for the 2021 Kia Sorento come from WELLS. Every part fits all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged).
Listed part numbers: WELLS 1R3545 and WELLS 1R2271.
Neutral Safety Switch / Range Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 2.5L L4, 2.5L L4 Turbocharged | 427002H000 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
This group shows a single part: HYUNDAI 427002H000.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: all 2021 Sorento engines | 1S6857 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| FACET Fits: all 2021 Sorento engines | 250071 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ROSTRA Fits: all 2021 Sorento engines | 501242 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | PS772 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 1.6L L4 ELECTRIC/GAS Turbocharged | V53720147 | 🇺🇸 US | 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.
5 Oil Pressure Sender / Switch parts for the 2021 Kia Sorento come from 5 brands — WELLS, FACET, ROSTRA and 2 other brands. The "Popular" part is WELLS 1S6857. 4 parts fit every engine; the other 1 is engine-specific.
Listed part numbers: WELLS 1S6857, FACET 250071 and ROSTRA 501242, plus the other parts above.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | DWS2279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rightwithout One Touch Window Open/Close | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Sorento engines | DWS2276 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | 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.
2 Power Window Switch parts for the 2021 Kia Sorento come from STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged).
This group includes STANDARD MOTOR PRODUCTS DWS2279 and STANDARD MOTOR PRODUCTS DWS2276.
Buying Electrical Switch & Relay Parts for a 2021 Kia Sorento
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. Some electrical switch & relay parts fit every engine; others are 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 Accessory Power Relay .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2021 Kia Sorento?
Our catalog currently lists 22 electrical switch & relay parts for the 2021 Kia Sorento across 9 subcategories and 8 brands, covering all 3 engine options (1.6L L4 ELECTRIC/GAS Turbocharged, 2.5L L4 and 2.5L L4 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2021 Kia Sorento engines?
Some do. 20 parts fit every engine; the other 2 are engine-specific. Each row (and the filter at the top) shows which. 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 2021 Kia Sorento?
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 2021 Kia Sorento 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 2021 Kia Sorento?
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 2021 Kia Sorento
Electrical Switch & Relay Parts for Other Kia Sorento Years
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