48 Electrical switch & relay parts are listed for the 2016 Audi A8, in 16 part types, covering all 5 engine options (3.0L V6 DIESEL Turbocharged, 3.0L V6 Supercharged, 4.0L V8 Turbocharged, 6.3L W12 and 6.3L W12 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2016 Audi A8, 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), Power Window Switch (8 parts) and A/C Refrigerant Pressure Switch (5 parts). The other 13 part types cover the remaining 27 parts.
The 2016 Audi A8 was sold with 5 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
14 brands supply electrical switch & relay parts for the 2016 Audi A8, led by WELLS (12 parts), VEMO (11 parts) and HELLA (6 parts), plus 11 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2016 Audi A8. 6 parts have it, including UAC SW11224C (A/C Refrigerant Pressure Switch) and VEMO V10730302 (Brake Light Switch). Each part number opens a page with every vehicle that part fits.
A/C Condenser Fan Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 933332451 | 🇺🇸 US 🇲🇽 MX | 4-pin connector | View on Amazon |
This table covers the relays that control the A/C Condenser Fan 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.
One part is listed for the 2016 Audi A8 — HELLA 933332451.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Popular Fits: 6.3L W12 | SW11224C | 🇺🇸 US 🇲🇽 MX | Pressure Transducer | View on Amazon |
| FOUR SEASONS Fits: 6.3L W12 | 37427 | 🇺🇸 US 🇲🇽 MX | Pressure Switch | View on Amazon |
| GPD Fits: 6.3L W12 | 1712374 | 🇺🇸 US 🇲🇽 MX | Pressure Transducer | View on Amazon |
| VEMO Fits: 6.3L W12 | V10730300 | 🇺🇸 US | View on Amazon | |
| VNE Fits: 6.3L W12 | 4016002 | 🇺🇸 US 🇲🇽 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.
5 A/C Refrigerant Pressure Switch parts are listed for the 2016 Audi A8, from UAC, FOUR SEASONS, GPD and 2 other brands. UAC SW11224C carries the "Popular" badge.
Part numbers include UAC SW11224C, FOUR SEASONS 37427 and GPD 1712374, among others listed above.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 6.3L W12 | 1713414 | 🇺🇸 US 🇲🇽 MX | Thermistor | 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.
This group shows a single part: GPD 1713414.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 933332451 | 🇺🇸 US 🇲🇽 MX | 4-pin connector | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | RY577 | 🇺🇸 US 🇲🇽 MX | Functions: Fuel Pump Relay | View on Amazon |
| WELLS Fits: 6.3L W12 | 1R2303 | 🇺🇸 US 🇲🇽 MX | Mounting Hardware Included: No | 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.
3 Accessory Power Relay parts for the 2016 Audi A8 come from 3 brands — HELLA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes HELLA 933332451, STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Popular Fits: 6.3L W12 | V10730302 | 🇺🇸 US | Plug (Connector): 4 Pins | View on Amazon |
| DORMAN Fits: 6.3L W12 | 920497 | 🇺🇸 US 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | SLS488 | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| VNE Fits: 6.3L W12 | 4015012 | 🇺🇸 US 🇲🇽 MX | Stop Light Switchwith Armoured Vehicle Option | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S10938 | 🇺🇸 US 🇲🇽 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.
5 Brake Light Switch parts are listed for the 2016 Audi A8, from VEMO, DORMAN, STANDARD MOTOR PRODUCTS and 2 other brands. VEMO V10730302 carries the "Popular" badge.
In the Economy grade, VEMO and DORMAN supply 2 parts: the catalog's value-priced group. A representative part number is VEMO V10730302.
The Standard Replacement section lists 3 options from STANDARD MOTOR PRODUCTS, VNE and WELLS — built to original-equipment specification. STANDARD MOTOR PRODUCTS SLS488 is listed in this group.
Listed part numbers: VEMO V10730302, DORMAN 920497 and STANDARD MOTOR PRODUCTS SLS488, plus the other parts above.
Fog / Driving Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 933332451 | 🇺🇸 US 🇲🇽 MX | 4-pin connector | View on Amazon |
This table covers the relays that control the Fog / Driving Lamp 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 2016 Audi A8 — HELLA 933332451.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 933332451 | 🇺🇸 US 🇲🇽 MX | 4-pin connector | View on Amazon |
| VEMO Fits: 6.3L W12 | V15710064 | 🇺🇸 US 🇲🇽 MX | Executive US equipment | View on Amazon |
| VEMO Fits: 6.3L W12 | V15710063 | 🇺🇸 US 🇲🇽 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.
3 Fuel Pump / Circuit Opening Relay parts are listed for the 2016 Audi A8, from VEMO and HELLA.
Part numbers include HELLA 933332451, VEMO V15710064 and VEMO V15710063.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 965453801 | 🇺🇸 US | 5-pin connector | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | RY577 | 🇺🇸 US 🇲🇽 MX | Functions: Fuel Pump Relay | View on Amazon |
| VEMO Fits: 6.3L W12 | V15710040 | 🇺🇸 US | Plug (Connector): 5 Pins | View on Amazon |
| WELLS Fits: 6.3L W12 | 1R2303 | 🇺🇸 US 🇲🇽 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.
4 Horn Relay parts for the 2016 Audi A8 come from 4 brands — HELLA, STANDARD MOTOR PRODUCTS, VEMO and 1 other brand.
This group includes HELLA 965453801, STANDARD MOTOR PRODUCTS RY577 and VEMO V15710040 and the remaining parts above.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 6.3L W12 | 1S17872 | 🇺🇸 US 🇲🇽 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.
This group shows a single part: WELLS 1S17872.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 6.3L W12 | 0986AH0307 | 🇺🇸 US 🇲🇽 MX | Multi-Purpose Relay | View on Amazon |
| ÜRO PARTS Fits: 6.3L W12 | 7M0951253A | 🇺🇸 US 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 6.3L W12 | 1R1007 | 🇺🇸 US 🇲🇽 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.
3 Multi-Function Relay parts are listed for the 2016 Audi A8, from BOSCH, ÜRO PARTS and WELLS.
This group includes BOSCH 0986AH0307, ÜRO PARTS 7M0951253A and WELLS 1R1007.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 6.3L W12 | V10730237 | 🇺🇸 US | Color-Black | View on Amazon |
| WALKER PRODUCTS Fits: 6.3L W12 | 2561078 | 🇺🇸 US 🇲🇽 MX | 1.2-1.6 BARColor-Black | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular Fits: 6.3L W12 | 2011987 | 🇺🇸 US 🇲🇽 MX | with Light1.2-1.6 Bar | View on Amazon |
| FACET Popular Fits: 6.3L W12 | 70171 | 🇺🇸 US | Color-Black1.2-1.6 BAR | View on Amazon |
| GPD Fits: 6.3L W12 | 1815398 | 🇺🇸 US 🇲🇽 MX | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | PS488 | 🇺🇸 US 🇲🇽 MX | Black | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S10850 | 🇺🇸 US | 1.20 - 1.60 BarBlack | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S12099 | 🇺🇸 US | 3.10 - 3.90 BarGreen | 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 2016 Audi A8, from WELLS, VEMO, WALKER PRODUCTS and 4 other brands. BECK/ARNLEY 2011987 carries the "Popular" badge.
Economy: 2 parts, from VEMO and WALKER PRODUCTS. A representative part number is VEMO V10730237.
The Standard Replacement section: 6 options from WELLS, BECK/ARNLEY, FACET and 2 other brands. BECK/ARNLEY 2011987 is listed in this group.
This group includes BECK/ARNLEY 2011987, VEMO V10730237 and WALKER PRODUCTS 2561078 and the remaining parts above.
Power Seat Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 6.3L W12 | V10730560 | 🇺🇸 US 🇲🇽 MX | Front RightElectric seat adjustment F | View on Amazon |
| VEMO Fits: 6.3L W12 | V10730562 | 🇺🇸 US 🇲🇽 MX | Fits Front LeftElectric seat adjustment F | 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.
2 Power Seat Switch parts for the 2016 Audi A8 come from VEMO.
This group includes VEMO V10730560 and VEMO V10730562.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Popular Fits: 6.3L W12 | V10730028 | 🇺🇸 US | Fits Rear | View on Amazon |
| WELLS Popular Fits: 6.3L W12 | 1S13089 | 🇺🇸 US 🇲🇽 MX | Fits Front Rightwithout roll-up sunshade f | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | DWS2198 | 🇺🇸 US 🇲🇽 MX | Fits Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.3L W12 | DWS2200 | 🇺🇸 US 🇲🇽 MX | Front Left | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S13093 | 🇺🇸 US 🇲🇽 MX | Fits Front Rightwith roll-up sunshade F | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S13074 | 🇺🇸 US 🇲🇽 MX | Front Leftwith Dual Child Safety Lock | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S13092 | 🇺🇸 US 🇲🇽 MX | Front Leftwith Single Child Safety Lock | View on Amazon |
| WELLS Fits: 6.3L W12 | 1S13094 | 🇺🇸 US 🇲🇽 MX | Fits Front Rightwith roll-up sunshade F | 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.
8 Power Window Switch parts are listed for the 2016 Audi A8, from WELLS, STANDARD MOTOR PRODUCTS and VEMO. VEMO V10730028 carries the "Popular" badge.
Listed part numbers: VEMO V10730028, WELLS 1S13089 and STANDARD MOTOR PRODUCTS DWS2198, plus the other parts above.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.3L W12 | 933332451 | 🇺🇸 US 🇲🇽 MX | 4-pin connector | View on Amazon |
This table covers the relays that control the Radiator Fan 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 933332451.
Trunk Lid / Tailgate Release Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 6.3L W12 | V10730430 | 🇺🇸 US 🇲🇽 MX | 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.
This group shows a single part: VEMO V10730430.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 6.3L W12 | V15803313 | 🇺🇸 US 🇲🇽 MX | Heated leather trimmed multi-function steering wheel with Tiptronic | 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.
One part is listed for the 2016 Audi A8 — VEMO V15803313.
Buying Electrical Switch & Relay Parts for a 2016 Audi A8
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 Power Window Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2016 Audi A8?
Our catalog currently lists 48 electrical switch & relay parts for the 2016 Audi A8 across 16 subcategories and 14 brands, covering all 5 engine options (3.0L V6 DIESEL Turbocharged, 3.0L V6 Supercharged, 4.0L V8 Turbocharged, 6.3L W12 and 6.3L W12 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2016 Audi A8 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 2016 Audi A8?
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 2016 Audi A8 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 2016 Audi A8?
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 2016 Audi A8
Electrical Switch & Relay Parts for Other Audi A8 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.