40 Electrical switch & relay parts are listed for the 2018 Audi S6, in 14 part types, covering the 4.0L V8 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2018 Audi S6, 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 (8 parts), Brake Light Switch (4 parts) and Multi-Function Relay (4 parts). The other 11 part types cover the remaining 24 parts.
The 2018 Audi S6 came with a single engine, the 4.0L V8 Turbocharged, and every part is verified against it.
12 brands supply electrical switch & relay parts for the 2018 Audi S6, led by WELLS (13 parts), VEMO (9 parts) and STANDARD MOTOR PRODUCTS (4 parts), plus 9 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi S6. 2 parts have it, including STANDARD MOTOR PRODUCTS PS673 (Oil Pressure Sender / Switch) and WELLS 1S12104 (Oil Pressure Sender / Switch). Each part number opens a page with every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 37427 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| UAC | SW11224C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | View on Amazon |
| VNE | 4016002 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 are listed for the 2018 Audi S6, from FOUR SEASONS, UAC and VNE.
This group includes FOUR SEASONS 37427, UAC SW11224C and VNE 4016002.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 920497 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 620127 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | SLS488 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S10938 | 🇺🇸 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 are listed for the 2018 Audi S6, from DORMAN, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.
In the Economy grade, DORMAN supplies 1 part: the catalog's value-priced group. A representative part number is DORMAN 920497.
The Standard Replacement section lists 3 options from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS — built to original-equipment specification. ROSTRA 620127 is listed in this group.
This group includes DORMAN 920497, ROSTRA 620127 and STANDARD MOTOR PRODUCTS SLS488 and the remaining parts above.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S14794 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwith Lane Departure Warning System | View on Amazon |
| WELLS | 1S14788 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwithout Lane Departure Warning System | 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.
2 Dimmer Switch parts for the 2018 Audi S6 come from WELLS.
This group includes WELLS 1S14794 and WELLS 1S14788.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V15710070 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
One part is listed for the 2018 Audi S6 — VEMO V15710070.
Hazard Warning Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V10730366 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Integrated Relay | View on Amazon |
This table covers the Hazard Warning 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: VEMO V10730366.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1R2303 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Horn 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: WELLS 1R2303.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V15800004 | 🇺🇸 US | View on Amazon | |
| WELLS | 1S17872 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
2 Ignition Starter Switch parts for the 2018 Audi S6 come from 2 brands — VEMO and WELLS.
Part numbers include VEMO V15800004 and WELLS 1S17872.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 0986332209 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Purpose Relay | View on Amazon |
| BOSCH | 0986AH0080 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Purpose Relay | View on Amazon |
| ÜRO PARTS | 7M0951253A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1R1007 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | 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.
4 Multi-Function Relay parts are listed for the 2018 Audi S6, from BOSCH, ÜRO PARTS and WELLS.
This group includes BOSCH 0986332209, BOSCH 0986AH0080 and ÜRO PARTS 7M0951253A and the remaining parts above.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS | 2561150 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Color-Turquoise | View on Amazon |
| WALKER PRODUCTS | 2561112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Light Blue | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PS673 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Type: Socket | View on Amazon |
| WELLS Popular | 1S12104 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Light Blue | View on Amazon |
| HELLA | 003259971 | 🇺🇸 US | 1-Pin ConnectorColor: Black or Turquoise | View on Amazon |
| ROSTRA | 501409 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits with Blue Connectoror with 1 TerminalsBlue Connector | View on Amazon |
| STANDARD MOTOR PRODUCTS | PS669 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Finish: Chrome, Plastic | View on Amazon |
| VEMO | V10720420 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | From 08/28/2017 | 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.
8 Oil Pressure Sender / Switch parts are listed for the 2018 Audi S6, from WALKER PRODUCTS, STANDARD MOTOR PRODUCTS, WELLS and 3 other brands. STANDARD MOTOR PRODUCTS PS673 carries the "Popular" badge.
Economy: 2 parts, from WALKER PRODUCTS. A representative part number is WALKER PRODUCTS 2561150.
The Standard Replacement section: 6 options from STANDARD MOTOR PRODUCTS, WELLS, HELLA and 2 other brands. STANDARD MOTOR PRODUCTS PS673 is listed in this group.
Listed part numbers: STANDARD MOTOR PRODUCTS PS673, WALKER PRODUCTS 2561150 and WALKER PRODUCTS 2561112, plus the other parts above.
Power Seat Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V10730559 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LeftComfort front seats [Q2J] | View on Amazon |
This table covers the Power Seat 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: VEMO V10730559.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 4F0959851G5PR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Leftwith Electronic Child Safety Locks | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | DWS2198 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Right | View on Amazon |
| WELLS | 1S13089 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front RightTo 12/2018 | View on Amazon |
| WELLS | 1S13072 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftTo 12/2018 | 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.
4 Power Window Switch parts are listed for the 2018 Audi S6, from WELLS, ÜRO PARTS and STANDARD MOTOR PRODUCTS.
Economy: 1 part, from ÜRO PARTS. A representative part number is ÜRO PARTS 4F0959851G5PR.
The Standard Replacement section: 3 options from WELLS and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS DWS2198 is listed in this group.
This group includes ÜRO PARTS 4F0959851G5PR, STANDARD MOTOR PRODUCTS DWS2198 and WELLS 1S13089 and the remaining parts above.
Trunk Lid / Tailgate Release Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 4G0959831A5PR | 🇺🇸 US | Rearwithout Keyless Entry | View on Amazon |
| VEMO | V10730430 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO | V10730653 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
This table covers the Trunk Lid / Tailgate Release 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 Trunk Lid / Tailgate Release Switch parts for the 2018 Audi S6 come from 2 brands — VEMO and ÜRO PARTS.
Listed part numbers: ÜRO PARTS 4G0959831A5PR, VEMO V10730430 and VEMO V10730653.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V10730428 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO | V15800048 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S14794 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwith Lane Departure Warning System | View on Amazon |
| WELLS | 1S14788 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwithout Lane Departure Warning System | 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.
4 Turn Signal Switch parts are listed for the 2018 Audi S6, from VEMO and WELLS.
Listed part numbers: VEMO V10730428, VEMO V15800048 and WELLS 1S14794, plus the other parts above.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S14794 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwith Lane Departure Warning System | View on Amazon |
| WELLS | 1S14788 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Adaptive Cruise Controlwithout Lane Departure Warning System | 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.
2 Wiper / Washer Switch parts for the 2018 Audi S6 come from WELLS.
Part numbers include WELLS 1S14794 and WELLS 1S14788.
Buying Electrical Switch & Relay Parts for a 2018 Audi S6
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 4.0L V8 Turbocharged engine — every part on this page is matched to it.
- 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 Brake Light Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2018 Audi S6?
Our catalog currently lists 40 electrical switch & relay parts for the 2018 Audi S6 across 14 subcategories and 12 brands, covering the 4.0L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2018 Audi S6?
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 2018 Audi S6 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 2018 Audi S6?
Every part on this page is matched to the 4.0L V8 Turbocharged engine. 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 2018 Audi S6
Electrical Switch & Relay Parts for Other Audi S6 Years
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