24 Electrical switch & relay parts are listed for the 2015 Audi A6, in 10 part types, covering all 3 engine options (2.0L L4 Turbocharged, 3.0L V6 DIESEL Turbocharged and 3.0L V6 Supercharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
The switch and relay system on the 2015 Audi A6 covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are A/C Refrigerant Pressure Switch (5 parts), Brake Light Switch (5 parts) and Cruise Control Switch (4 parts). The other 7 part types cover the remaining 10 parts.
The 2015 Audi A6 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 2015 Audi A6 electrical switch & relay parts are ROSTRA (5 parts), WELLS (5 parts) and HELLA (4 parts), plus 7 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2015 Audi A6 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including MAHLE / CLEVITE ASE21000P (A/C Refrigerant Pressure Switch) and VEMO V10730302 (Brake Light Switch). Click any part number to see every vehicle that part fits.
A/C Condenser Fan Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.0L V6 DIESEL Turbocharged | 933332451 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: HELLA 933332451.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Popular Fits: 3.0L V6 DIESEL Turbocharged | ASE21000P | 🇺🇸 US 🇨🇦 CA | with 3 Ports for Pressure SwitchPassenger Car EC | View on Amazon |
| FOUR SEASONS Fits: 3.0L V6 DIESEL Turbocharged | 37427 | 🇺🇸 US 🇨🇦 CA | Pressure Switch | View on Amazon |
| GPD Fits: 3.0L V6 DIESEL Turbocharged | 1712374 | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| UAC Fits: 3.0L V6 DIESEL Turbocharged | SW11224C | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| VEMO Fits: 3.0L V6 DIESEL Turbocharged | V10730300 | 🇺🇸 US | 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 for the 2015 Audi A6 come from 5 brands — MAHLE / CLEVITE, FOUR SEASONS, GPD and 2 other brands. The "Popular" part is MAHLE / CLEVITE ASE21000P.
Part numbers include MAHLE / CLEVITE ASE21000P, FOUR SEASONS 37427 and GPD 1712374, among others listed above.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 3.0L V6 DIESEL Turbocharged | 1713414 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2015 Audi A6 — GPD 1713414.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.0L V6 DIESEL Turbocharged | 933332451 | 🇺🇸 US 🇨🇦 CA | 4-pin connector | 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.
One part is listed for the 2015 Audi A6 — HELLA 933332451.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Popular Fits: 3.0L V6 DIESEL Turbocharged | V10730302 | 🇺🇸 US | Plug (Connector): 4 Pins | View on Amazon |
| DORMAN Fits: 3.0L V6 DIESEL Turbocharged | 920497 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.0L V6 DIESEL Turbocharged | 620127 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 DIESEL Turbocharged | SLS488 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 3.0L V6 DIESEL Turbocharged | 1S10938 | 🇺🇸 US 🇨🇦 CA | 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 for the 2015 Audi A6 come from 5 brands — VEMO, DORMAN, ROSTRA and 2 other brands. The "Popular" part is VEMO V10730302.
The Economy section lists 2 options from VEMO and DORMAN — the catalog's value-priced group. VEMO V10730302 is listed in this group.
In the Standard Replacement grade, ROSTRA, STANDARD MOTOR PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is ROSTRA 620127.
Part numbers include VEMO V10730302, DORMAN 920497 and ROSTRA 620127, among others listed above.
Cruise Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.0L V6 DIESEL Turbocharged | 641017 | 🇺🇸 US 🇨🇦 CA | without Lane Departure Warning System | View on Amazon |
| ROSTRA Fits: 3.0L V6 DIESEL Turbocharged | 641025 | 🇺🇸 US 🇨🇦 CA | with Lane Departure Warning System | View on Amazon |
| WELLS Fits: 3.0L V6 DIESEL Turbocharged | 1S14794 | 🇺🇸 US 🇨🇦 CA | with Lane Departure Warning System | View on Amazon |
| WELLS Fits: 3.0L V6 DIESEL Turbocharged | 1S14788 | 🇺🇸 US 🇨🇦 CA | without Lane Departure Warning System | View on Amazon |
This table covers the Cruise Control 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 Cruise Control Switch parts are listed for the 2015 Audi A6, from ROSTRA and WELLS.
Listed part numbers: ROSTRA 641017, ROSTRA 641025 and WELLS 1S14794, plus the other parts above.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.0L V6 DIESEL Turbocharged | 641017 | 🇺🇸 US 🇨🇦 CA | with Cruise Controlwithout Lane Departure Warning System | View on Amazon |
| ROSTRA Fits: 3.0L V6 DIESEL Turbocharged | 641025 | 🇺🇸 US 🇨🇦 CA | with Lane Departure Warning Systemwith Cruise Control | View on Amazon |
| WELLS Fits: 3.0L V6 DIESEL Turbocharged | 1S14794 | 🇺🇸 US 🇨🇦 CA | with Lane Departure Warning System | View on Amazon |
| WELLS Fits: 3.0L V6 DIESEL Turbocharged | 1S14788 | 🇺🇸 US 🇨🇦 CA | without 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.
4 Dimmer Switch parts are listed for the 2015 Audi A6, from ROSTRA and WELLS.
Part numbers include ROSTRA 641017, ROSTRA 641025 and WELLS 1S14794, among others listed above.
Fog / Driving Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.0L V6 DIESEL Turbocharged | 933332451 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: HELLA 933332451.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.0L V6 DIESEL Turbocharged | 933332451 | 🇺🇸 US 🇨🇦 CA | 4-pin connector | 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.
This group shows a single part: HELLA 933332451.
Hazard Warning Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 3.0L V6 DIESEL Turbocharged | V10730366 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2015 Audi A6 — VEMO V10730366.
Buying Electrical Switch & Relay Parts for a 2015 Audi A6
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: A/C Refrigerant Pressure Switch and Brake Light Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2015 Audi A6?
Our catalog currently lists 24 electrical switch & relay parts for the 2015 Audi A6 across 10 subcategories and 10 brands, covering all 3 engine options (2.0L L4 Turbocharged, 3.0L V6 DIESEL Turbocharged and 3.0L V6 Supercharged). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2015 Audi A6 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 2015 Audi A6?
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 2015 Audi A6 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 2015 Audi A6?
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 2015 Audi A6
Electrical Switch & Relay Parts for Other Audi A6 Years
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