This page lists 13 electrical switch & relay parts for the 2021 BMW X5, across 6 part types, covering all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW X5, 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 (4 parts), A/C Refrigerant Pressure Switch (3 parts) and Headlamp Switch (3 parts). The other 3 part types cover the remaining 3 parts.
The 2021 BMW X5 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 2021 BMW X5 electrical switch & relay parts are WELLS (5 parts), FOUR SEASONS (1 part) and REIN (1 part), plus 6 more brands.
Each part number listed for the 2021 BMW X5 opens a page with every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 20997 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| REIN Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | ACS0243P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UAC Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | SW11170C | 🇺🇸 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.
3 A/C Refrigerant Pressure Switch parts for the 2021 BMW X5 come from 3 brands — FOUR SEASONS, REIN and UAC.
Part numbers include FOUR SEASONS 20997, REIN ACS0243P and UAC SW11170C.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 2012711 | 🇺🇸 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.
This group shows a single part: BECK/ARNLEY 2012711.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1S18205 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Night Vision Camerawithout LED Lights | View on Amazon |
| WELLS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1S18231 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with LED Fog Lightswith Night Vision Camera | View on Amazon |
| WELLS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1S18237 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Fog Lightswithout Night Vision Camera | 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.
WELLS supplies the 3 Headlamp Switch parts for the 2021 BMW X5.
Part numbers include WELLS 1S18205, WELLS 1S18231 and WELLS 1S18237.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1S17908 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Push Button Switch, with Class Package | 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 BMW X5 — WELLS 1S17908.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FACET Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 250015 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GPD Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1816559 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | PS754 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| WELLS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 1S16103 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Oil Pressure Sender / Switch parts for the 2021 BMW X5 come from 4 brands — FACET, GPD, STANDARD MOTOR PRODUCTS and 1 other brand.
Part numbers include FACET 250015, GPD 1816559 and STANDARD MOTOR PRODUCTS PS754, among others listed above.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | V20730271 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits RearColor: Black | 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.
This group shows a single part: VEMO V20730271.
Buying Electrical Switch & Relay Parts for a 2021 BMW X5
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 2021 BMW X5?
Our catalog currently lists 13 electrical switch & relay parts for the 2021 BMW X5 across 6 subcategories and 9 brands, covering all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2021 BMW X5 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 2021 BMW X5?
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 BMW X5 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 BMW X5?
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 BMW X5
Electrical Switch & Relay Parts for Other BMW X5 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.