2016 Audi A3 Electrical Switch & Relay Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

The 2016 Audi A3 has 87 electrical switch & relay parts with verified fitment on this page — 22 part types and 17 brands, covering all 5 engine options (1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 1.8L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged and 2.0L L4 Turbocharged). Each part includes a manufacturer part number and application notes.

On the 2016 Audi A3, 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 (32 parts), A/C Refrigerant Pressure Switch (7 parts) and Brake Light Switch (7 parts). The other 19 part types cover the remaining 41 parts.

A/C Condenser Fan Motor Relay

Brand Part Number Markets Notes Buy
HELLA Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
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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 Pressure Safety Switch

Brand Part Number Markets Notes Buy
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged V10730521
🇺🇸 US 🇨🇦 CA
with Seal RingTo 07/14/2016
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This table covers the A/C Pressure 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.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
UAC Popular Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged, 1.4L L4 ELECTRIC/GAS Turbocharged SW11224C
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Pressure Transducer
Fitment notes — UAC SW11224C
Pressure Transducer
with Automatic A/CTransducer
Transducer
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FOUR SEASONS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 37427
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Pressure Switch
Fitment notes — FOUR SEASONS 37427
Pressure Switch
Transducer
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GPD Fits: 2.0L L4 DIESEL Turbocharged 1712374
🇺🇸 US 🇨🇦 CA
Pressure Transducer
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JAPANESE OE Fits: 1.4L L4 Turbocharged 3ACP0018
🇲🇽 MX
Sensata
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V10730300
🇺🇸 US
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VNE Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged 4016002
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 5S16908
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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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.

A/C Trinary Switch

Brand Part Number Markets Notes Buy
GPD Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 1711374
🇺🇸 US 🇨🇦 CA
Trinary Switch
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This table covers the A/C Trinary 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.

ABS Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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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 Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
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STANDARD MOTOR PRODUCTS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
Fitment notes — WELLS 1R2303
Mounting Hardware Included: No
with 5 TerminalsRectangular
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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.

Back Up / Reverse Lamp Switch

Brand Part Number Markets Notes Buy
ROSTRA Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 670061
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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WELLS Fits: 1.4L L4 Turbocharged 1S7033
🇲🇽 MX
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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
ÜRO PARTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged 5G0698459
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V10730389
🇨🇦 CA
ConvertibleRepair set
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 2.0L L4 DIESEL Turbocharged, 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged SLS473
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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ROSTRA Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 620097
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V46730049
🇺🇸 US
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VNE Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 4013066
🇺🇸 US 🇨🇦 CA
Sensor SwitchBrake Light Sensor
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WELLS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1S10862
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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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 Fits: 2.0L L4 DIESEL Turbocharged 71235
🇺🇸 US
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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.

Diesel Glow Plug Switch

Brand Part Number Markets Notes Buy
MARELLI Fits: 2.0L L4 DIESEL Turbocharged UY7A
🇺🇸 US 🇨🇦 CA
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This table covers the Diesel Glow Plug 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.

Fog / Driving Lamp Relay

Brand Part Number Markets Notes Buy
HELLA Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
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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
HELLA Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
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STANDARD MOTOR PRODUCTS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged V15710075
🇺🇸 US 🇨🇦 CA
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V15710074
🇺🇸 US 🇨🇦 CA
From 05/25/2015
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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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 Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged 965453801
🇺🇸 US
5-pin connector
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V15710040
🇺🇸 US
Plug (Connector): 5 Pins
Fitment notes — VEMO V15710040
Plug (Connector): 5 Pins
Relay No. 646Voltage: 12 VAmperage: 15 A
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WELLS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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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
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged V15803310
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
without CableRadio Remote Controlled Central Locking
Fitment notes — VEMO V15803310
without CableRadio Remote Controlled Central Locking
Fits:
Convertible or Sedanwithout CableRadio Remote Controlled Central Lockingor Convertible or SedanRadio Remote Controlled Central Locking
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged US1419
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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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.

Multi-Function Relay

Brand Part Number Markets Notes Buy
BOSCH Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 0986AH0082
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0082
Multi-Purpose Relay
70 Ampswith 4 Blade Connectorwith Marking # 7M0951253A
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BOSCH Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 0986332209
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
Fitment notes — BOSCH 0986332209
Multi-Purpose Relay
30 Ampswith 4 Blade Connectorwith Marking # 4H0951253A
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BOSCH Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 0986AH0080
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0080
Multi-Purpose Relay
70 Ampswith 4 Blade Connectorwith Marking # 1KO951253A
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BOSCH Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 0986AH0307
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0307
Multi-Purpose Relay
30 Ampswith 5 Terminal Relay
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ÜRO PARTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 7M0951253A
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R1007
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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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
ÜRO PARTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 06A919081C
🇺🇸 US 🇨🇦 CA
with 0.3 - 0.6 Bar Sensor
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged V15991999
🇺🇸 US
Plug (Connector): 1 PinThread Size: M10 X 1
Fitment notes — VEMO V15991999
Plug (Connector): 1 PinThread Size: M10 X 10.30 or 0.60 BarColor-Green
0.3 - 0.6 Bar
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged V10730084
🇺🇸 US
Plug (Connector): 1 Pin or 2 PinThread Size: M10 X 1
Fitment notes — VEMO V10730084
Plug (Connector): 1 Pin or 2 PinThread Size: M10 X 12.15 or 2.9 BarColor-Blue
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V10730477
🇺🇸 US 🇨🇦 CA
Color-Green0.30
Fitment notes — VEMO V10730477
Color-Green0.300.60 Bar
Fits:
or GREEN
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V10730478
🇺🇸 US 🇨🇦 CA
Color-BrownIncludes Seal
Fitment notes — VEMO V10730478
Color-BrownIncludes Seal
Fits:
Brownor 2.3-3.0 BAR
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WALKER PRODUCTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 2561092
🇺🇸 US 🇨🇦 CA
0.30-0.60 BARGreen
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WALKER PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged 2561286
🇺🇸 US 🇨🇦 CA
0.30-0.60 bar
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WALKER PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged 2561086
🇺🇸 US 🇨🇦 CA
2.3-3.0 BAR
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Standard Replacement

Brand Part Number Markets Notes Buy
BECK/ARNLEY Popular Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 2011983
🇺🇸 US 🇨🇦 CA
with Light2.15-2.95 BAR
Fitment notes — BECK/ARNLEY 2011983
with Light2.15-2.95 BARBlue
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FACET Popular Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 70192
🇺🇸 US
2.15-2.95 BAR
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FACET Popular Fits: 2.0L L4 DIESEL Turbocharged 70205
🇺🇸 US
2.3-3.0 BAR
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FACET Popular Fits: 2.0L L4 DIESEL Turbocharged 70204
🇺🇸 US
0.30-0.60 bar
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HELLA Popular Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 008280001
🇺🇸 US
1-Pin ConnectorColor: Green or Brown
Fitment notes — HELLA 008280001
1-Pin ConnectorColor: Green or Brown
0.30-0.60 bar
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HELLA Popular Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 009600241
🇺🇸 US
1-Pin ConnectorColor: Black or Color: Blue
Fitment notes — HELLA 009600241
1-Pin ConnectorColor: Black or Color: Blue
Normally Closed Contact2.15-2.95 Bar
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HELLA Popular Fits: 2.0L L4 DIESEL Turbocharged 009600041
🇺🇸 US
1-Pin Connector
Fitment notes — HELLA 009600041
1-Pin Connector
Normally Closed Contact2.3-3.0 Bar
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BECK/ARNLEY Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 2011946
🇺🇸 US 🇨🇦 CA
with Light0.30-0.60 BAR
Fitment notes — BECK/ARNLEY 2011946
with Light0.30-0.60 BARGreen
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BECK/ARNLEY Fits: 2.0L L4 DIESEL Turbocharged 2012736
🇺🇸 US 🇨🇦 CA
with Light0.30-0.60 BAR
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BECK/ARNLEY Fits: 2.0L L4 DIESEL Turbocharged 2012735
🇺🇸 US 🇨🇦 CA
with Light2.3-3.0 BAR
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FACET Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 70139
🇺🇸 US
0.30-0.60 bar
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GPD Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 1815319
🇺🇸 US 🇨🇦 CA
with LightBlue
Fitment notes — GPD 1815319
with LightBluewith 1 Terminal(s)
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ROSTRA Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 501310
🇺🇸 US 🇨🇦 CA
Fits with Blue Connectoror 2.152.95 Bar
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STANDARD MOTOR PRODUCTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged PS479
🇺🇸 US 🇨🇦 CA
GREEN
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STANDARD MOTOR PRODUCTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged PS489
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2
Fitment notes — STANDARD MOTOR PRODUCTS PS489
Terminal Quantity: 2
Blue
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STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged PS668
🇺🇸 US 🇨🇦 CA
brownwith 2 Blade Terminals
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WELLS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 1S6863
🇺🇸 US 🇨🇦 CA
0.30 - 0.60 BarGreen
Fitment notes — WELLS 1S6863
0.30 - 0.60 BarGreenwith 1 Terminal(s)
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WELLS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 1S10849
🇺🇸 US 🇨🇦 CA
2.15 - 2.95 BarBlue
Fitment notes — WELLS 1S10849
2.15 - 2.95 BarBluewith 1 Terminal(s)
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WELLS Fits: 2.0L L4 DIESEL Turbocharged 1S16166
🇺🇸 US 🇨🇦 CA
with Brown Connectorwith Gauge
Fitment notes — WELLS 1S16166
with Brown Connectorwith Gauge2.3 - 3.0 Bar
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Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 1.4L L4 ELECTRIC/GAS Turbocharged 2OPS0303
🇺🇸 US 🇨🇦 CA
Blue1 Terminal
Fitment notes — HOLSTEIN 2OPS0303
Blue1 Terminalwith Light
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HOLSTEIN Fits: 2.0L L4 DIESEL Turbocharged 2OPS0363
🇺🇸 US 🇨🇦 CA
Brown2 Blade Terminal
Fitment notes — HOLSTEIN 2OPS0363
Brown2 Blade Terminalwith Light
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HOLSTEIN Fits: 2.0L L4 DIESEL Turbocharged 2OPS0366
🇺🇸 US 🇨🇦 CA
Light Green2 Blade Terminal
Fitment notes — HOLSTEIN 2OPS0366
Light Green2 Blade Terminalwith Light
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WELLS Fits: 1.4L L4 Turbocharged 1S6863
🇲🇽 MX
0.30 - 0.60 BarGreen
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WELLS Fits: 1.4L L4 Turbocharged 1S10849
🇲🇽 MX
2.15 - 2.95 BarBlue
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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.

Power Seat Switch

Brand Part Number Markets Notes Buy
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged V10730370
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Left
Fitment notes — VEMO V10730370
Left
SedanLeft
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V10730475
🇺🇸 US 🇨🇦 CA
Fits SedanElectric seat adjustment F
Fitment notes — VEMO V10730475
Fits:
SedanElectric seat adjustment F
or:
right seat manual height adjustment F
or:
left seat [3PE] or Electric seat adjustment F
or:
both front seats [3L5]Position: Right
or:
RightSedanElectric seat adjustment F
or:
right seat manual height adjustment F
or:
left seat [3PE] or Electric seat adjustment F
or:
both front seats [3L5]
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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
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V10730029
🇺🇸 US
Fits Rear
Fitment notes — VEMO V10730029
Fits:
Rear
or:
Front Right
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VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V10730030
🇺🇸 US
Color-Chrome
Fitment notes — VEMO V10730030
Color-Chrome
Front LeftManual Child LocksSwitch Panel Assembly
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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 Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 933332451
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
4-pin connector
Fitment notes — HELLA 933332451
4-pin connector
Motor Relay
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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.

Trunk Lid / Tailgate Release Switch

Economy

Brand Part Number Markets Notes Buy
ÜRO PARTS Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged 5N0827566T
🇺🇸 US 🇨🇦 CA
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Standard Replacement

Brand Part Number Markets Notes Buy
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V10730653
🇺🇸 US 🇨🇦 CA
Rear
Fitment notes — VEMO V10730653
Rear
SedanRear
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Brand Part Number Markets Notes Buy
ÜRO PARTS Fits: 1.4L L4 Turbocharged 5N0827566T
🇲🇽 MX
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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.

Turn Signal Switch

Brand Part Number Markets Notes Buy
VEMO Fits: 1.4L L4 ELECTRIC/GAS Turbocharged, 2.0L L4 DIESEL Turbocharged V15800033
🇺🇸 US 🇨🇦 CA
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VEMO Fits: 2.0L L4 DIESEL Turbocharged V15803351
🇺🇸 US 🇨🇦 CA
Electronic cruise control system (CCS) [8T2]without multi-function display/ trip computer "Medium" [9S4]
Fitment notes — VEMO V15803351
Electronic cruise control system (CCS) [8T2]without multi-function display/ trip computer "Medium" [9S4]Leather trimmed multi-function sports steering wheel [1XW] or Leather trimmed multi-function sports steering wheel with Tiptronic [1XX] or Leather-wrapped multi-function sports steering wheel [2PF]
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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 Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged RY577
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Functions: Fuel Pump Relay
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WELLS Fits: 1.4L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged 1R2303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Mounting Hardware Included: No
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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 2016 Audi A3

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 2016 Audi A3?

Our catalog currently lists 87 electrical switch & relay parts for the 2016 Audi A3 across 22 subcategories and 17 brands, covering all 5 engine options (1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 1.8L L4 Turbocharged, 2.0L L4 DIESEL Turbocharged and 2.0L L4 Turbocharged). Each part is matched to the engine(s) it fits.

Do electrical switch & relay parts differ between 2016 Audi A3 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 A3?

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 A3 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 A3?

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 A3

Electrical Switch & Relay Parts for Other Audi A3 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.