2015 Audi R8 Electrical Switch & Relay Parts

Engine:
4.2L V8

This page lists 65 electrical switch & relay parts for the 2015 Audi R8, across 24 part types, covering the 4.2L V8 engine. Every part shows its brand, manufacturer part number and fitment notes.

On the 2015 Audi R8, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 17 parts of the 65 listed are Oil Pressure Sender / Switch (7 parts), A/C Refrigerant Pressure Switch (5 parts) and Brake Light Switch (5 parts). The other 21 part types cover the remaining 48 parts.

A/C Condenser Fan Motor Relay

Brand Part Number Markets Notes Buy
HELLA 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 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.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
MAHLE / CLEVITE Popular ASE21000P
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
with 3 Ports for Pressure SwitchPassenger Car EC
View on
Amazon
FOUR SEASONS 37427
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Pressure Switch
Fitment notes — FOUR SEASONS 37427
Pressure Switch
Transducer
View on
Amazon
GPD 1712374
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Pressure Transducer
View on
Amazon
UAC SW11224C
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Pressure Transducer
Fitment notes — UAC SW11224C
Pressure Transducer
with Automatic A/CTransducer
View on
Amazon
VEMO V10730300
🇺🇸 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.

ABS Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
View on
Amazon
WELLS 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
View on
Amazon

This table covers the relays that control the ABS 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.

Accessory Power Relay

Brand Part Number Markets Notes Buy
HELLA 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
View on
Amazon
STANDARD MOTOR PRODUCTS RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
View on
Amazon
WELLS 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
Fitment notes — WELLS 1R2303
Mounting Hardware Included: No
with 5 TerminalsRectangular
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.

Alternator / Generator Diode Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS RY1981
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon

This table covers the relays that control the Alternator / Generator Diode 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.

Back Up / Reverse Lamp Switch

Economy

Brand Part Number Markets Notes Buy
VEMO V10730145
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Plug (Connector): 2 PinsThread Size: M14 X 1.5
Fitment notes — VEMO V10730145
Plug (Connector): 2 PinsThread Size: M14 X 1.5
Manual trans.
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
BECK/ARNLEY 2011864
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Manual trans.
View on
Amazon
FACET 76256
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Manual trans.
View on
Amazon

This table covers the Back Up / Reverse Lamp 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.

Brake Light Switch

Economy

Brand Part Number Markets Notes Buy
VEMO Popular V10730156
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Plug (Connector): 4 Pins
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
BECK/ARNLEY 2011986
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
FACET 71228
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
STANDARD MOTOR PRODUCTS SLS478
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
WELLS 1S7032
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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.

Clutch Pedal Position / Starter Safety Switch

Brand Part Number Markets Notes Buy
FACET 71309
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
STANDARD MOTOR PRODUCTS NS692
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Connector Gender: Female
View on
Amazon
WELLS 1S16670
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon

This table covers the Clutch Pedal Position / Starter 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.

Cruise Control Switch

Brand Part Number Markets Notes Buy
WELLS 1S12772
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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.

Dimmer Switch

Brand Part Number Markets Notes Buy
WELLS 1S12772
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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.

Fog / Driving Lamp Relay

Brand Part Number Markets Notes Buy
HELLA 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 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.

Fuel Pump / Circuit Opening Relay

Brand Part Number Markets Notes Buy
WELLS Popular 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
View on
Amazon
HELLA 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
View on
Amazon
STANDARD MOTOR PRODUCTS RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
View on
Amazon
VEMO V15710076
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Executive US equipment
View on
Amazon
VEMO V15710047
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
1/143
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.

Horn Relay

Brand Part Number Markets Notes Buy
HELLA 965453801
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
5-pin connector
View on
Amazon
VEMO V15710040
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Plug (Connector): 5 Pins
Fitment notes — VEMO V15710040
Plug (Connector): 5 Pins
Relay No. 646Voltage: 12 VAmperage: 15 A
View on
Amazon
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.

Ignition Starter Switch

Economy

Brand Part Number Markets Notes Buy
SKP SKUS672
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
VEMO V15803229
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Plug (Connector): 6 Pins
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular US672
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
ROSTRA 630052
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
WELLS 1S10953
🇺🇸 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.

Instrument Panel Dimmer Switch

Brand Part Number Markets Notes Buy
ROSTRA 650770
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Instrument Panel Dimmer Switch Only
View on
Amazon
WELLS 1S12328
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon

This table covers the Instrument Panel Dimmer 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.

Multi-Function Relay

Brand Part Number Markets Notes Buy
BOSCH 0986AH0307
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0307
Multi-Purpose Relay
30 Ampswith 5 Terminal 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.

Oil Pressure Sender / Switch

Economy

Brand Part Number Markets Notes Buy
VEMO V10730237
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Color-Black
View on
Amazon
WALKER PRODUCTS 2561078
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
BECK/ARNLEY Popular 2011987
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
with Light
View on
Amazon
FACET Popular 70171
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon
GPD 1815354
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
with Light
View on
Amazon
STANDARD MOTOR PRODUCTS PS488
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Black
View on
Amazon
WELLS 1S10850
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Fits 1.20 - 1.60 BarBlackor 1.20 - 1.60 Bar
Fitment notes — WELLS 1S10850
Fits:
1.20 - 1.60 BarBlackor 1.20 - 1.60 BarBlackwith 1 Terminal(s)
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.

Parking Brake Switch

Brand Part Number Markets Notes Buy
VEMO V10730453
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
View on
Amazon

This table covers the Parking Brake 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.

Power Seat Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS PSW185
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Left
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.

Power Window Switch

Brand Part Number Markets Notes Buy
ROSTRA 662020
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Left
View on
Amazon
ROSTRA 662021
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Right
View on
Amazon
WELLS 1S13077
🇺🇸 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.

Radiator Fan Relay

Brand Part Number Markets Notes Buy
HELLA 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
Fitment notes — HELLA 933332451
4-pin connector
Motor Relay
View on
Amazon
VEMO V15710007
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Plug (Connector): 4 Pins
Fitment notes — VEMO V15710007
Plug (Connector): 4 Pins
Relay No. 100Voltage: 12 VAmperage: 40 AMotor Relay
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.

Starter Motor Control Relay

Brand Part Number Markets Notes Buy
ROSTRA 600027
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Voltage: 12 Volts (Direct Current)
View on
Amazon
STANDARD MOTOR PRODUCTS RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
View on
Amazon
WELLS 1R1007
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
Fitment notes — WELLS 1R1007
Mounting Hardware Included: No
Square Relay
View on
Amazon
WELLS 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
Fitment notes — WELLS 1R2303
Mounting Hardware Included: No
Rectangular
View on
Amazon

This table covers the relays that control the Starter Motor Control 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.

Turn Signal Switch

Brand Part Number Markets Notes Buy
WELLS 1S12772
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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.

Washer Pump Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
View on
Amazon
WELLS 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Washer Pump 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.

Buying Electrical Switch & Relay Parts for a 2015 Audi R8

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 4.2L V8 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 A/C Refrigerant Pressure Switch .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2015 Audi R8?

Our catalog currently lists 65 electrical switch & relay parts for the 2015 Audi R8 across 24 subcategories and 15 brands, covering the 4.2L V8 engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical switch & relay problems on a 2015 Audi R8?

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 R8 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 R8?

Every part on this page is matched to the 4.2L V8 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 2015 Audi R8

Electrical Switch & Relay Parts for Other Audi R8 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.