This page lists 19 electrical switch & relay parts for the 2015 Audi A5, across 9 part types, covering all 3 engine options (1.8L L4 Turbocharged, 2.0L L4 Turbocharged and 3.0L V6 Supercharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2015 Audi A5, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 11 parts of the 19 listed are Oil Pressure Sender / Switch (6 parts), A/C Refrigerant Pressure Switch (3 parts) and Fuel Pump / Circuit Opening Relay (2 parts). The other 6 part types cover the remaining 8 parts.
The 2015 Audi A5 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
9 brands supply electrical switch & relay parts for the 2015 Audi A5, led by STANDARD MOTOR PRODUCTS (7 parts), WELLS (4 parts) and GPD (2 parts), plus 6 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2015 Audi A5. 2 parts have it, including STANDARD MOTOR PRODUCTS PS489 (Oil Pressure Sender / Switch) and WELLS 1S6875 (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 Fits: 1.8L L4 Turbocharged | 37427 | 🇲🇽 MX | Pressure Switch | View on Amazon |
| GPD Fits: 1.8L L4 Turbocharged | 1712374 | 🇲🇽 MX | Pressure Transducer | View on Amazon |
| UAC Fits: 1.8L L4 Turbocharged | SW11224C | 🇲🇽 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 are listed for the 2015 Audi A5, from FOUR SEASONS, GPD and UAC.
This group includes FOUR SEASONS 37427, GPD 1712374 and UAC SW11224C.
ABS Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | RY577 | 🇲🇽 MX | Functions: Fuel Pump Relay | 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.
One part is listed for the 2015 Audi A5 — STANDARD MOTOR PRODUCTS RY577.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | RY577 | 🇲🇽 MX | Functions: Fuel Pump Relay | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS RY577.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.8L L4 Turbocharged | 920497 | 🇲🇽 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.
One part is listed for the 2015 Audi A5 — DORMAN 920497.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | RY577 | 🇲🇽 MX | Functions: Fuel Pump Relay | View on Amazon |
| WELLS Fits: 1.8L L4 Turbocharged | 1R2303 | 🇲🇽 MX | Mounting Hardware Included: No | 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.
2 Fuel Pump / Circuit Opening Relay parts are listed for the 2015 Audi A5, from STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.8L L4 Turbocharged | PS489 | 🇲🇽 MX | Terminal Quantity: 2 | View on Amazon |
| WELLS Popular Fits: 1.8L L4 Turbocharged | 1S6875 | 🇲🇽 MX | Connector Gender: Female | View on Amazon |
| GPD Fits: 1.8L L4 Turbocharged | 1815319 | 🇲🇽 MX | with LightBlue | View on Amazon |
| HOLSTEIN Fits: 1.8L L4 Turbocharged | 2OPS0303 | 🇲🇽 MX | Dark Blue1 Blade Terminal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | PS665 | 🇲🇽 MX | BlackColor: Green | View on Amazon |
| WELLS Fits: 1.8L L4 Turbocharged | 1S12101 | 🇲🇽 MX | 2.15 - 2.95 BarBlue | 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.
6 Oil Pressure Sender / Switch parts are listed for the 2015 Audi A5, from STANDARD MOTOR PRODUCTS, WELLS, GPD and 1 other brand. STANDARD MOTOR PRODUCTS PS489 carries the "Popular" badge.
This group includes STANDARD MOTOR PRODUCTS PS489, WELLS 1S6875 and GPD 1815319 and the remaining parts above.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI Fits: 1.8L L4 Turbocharged | CI51062 | 🇲🇽 MX | Front Left | View on Amazon |
| ÜRO PARTS Fits: 1.8L L4 Turbocharged | 8K0959855BV10 | 🇲🇽 MX | Right | 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.
2 Power Window Switch parts are listed for the 2015 Audi A5, from MARELLI and ÜRO PARTS.
Part numbers include MARELLI CI51062 and ÜRO PARTS 8K0959855BV10.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | RY577 | 🇲🇽 MX | Functions: Fuel Pump Relay | View on Amazon |
| WELLS Fits: 1.8L L4 Turbocharged | 1R2303 | 🇲🇽 MX | Mounting Hardware Included: No | 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.
2 Starter Motor Control Relay parts for the 2015 Audi A5 come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.
Washer Pump Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | RY577 | 🇲🇽 MX | Functions: Fuel Pump Relay | 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.
One part is listed for the 2015 Audi A5 — STANDARD MOTOR PRODUCTS RY577.
Buying Electrical Switch & Relay Parts for a 2015 Audi A5
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 2015 Audi A5?
Our catalog currently lists 19 electrical switch & relay parts for the 2015 Audi A5 across 9 subcategories and 9 brands, covering all 3 engine options (1.8L L4 Turbocharged, 2.0L L4 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 A5 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 A5?
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 A5 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 A5?
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 A5
Electrical Switch & Relay Parts for Other Audi A5 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.