2015 Audi A3 Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

27 Alternator / Generator parts are listed for the 2015 Audi A3, from BOSCH, PURE ENERGY, WAI GLOBAL and 6 other brands. TYC 221081 carries the "Popular" badge. New and Remanufactured are all represented, and Remanufactured alone accounts for 14 parts.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

2 Alternator / Generator Pulley parts for the 2015 Audi A3 come from 2 brands — CONTINENTAL and LITENS.

Listed part numbers: CONTINENTAL 49934 and LITENS 920851A.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

18 Battery parts for the 2015 Audi A3 come from 8 brands — DEKA, FVP, ACDELCO and 5 other brands. The "Popular" part is DEKA 9A48.

In the AGM (Extended Life) grade, DEKA, FVP, ACDELCO and 4 other brands supply 16 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A48.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 2 parts: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT61047.

This table covers the Battery Current sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Battery Current Sensor parts are listed for the 2015 Audi A3, from HELLA and WELLS.

This group includes HELLA 010943901 and WELLS 5S16135.

This table covers the Door control modules. Read more

This group shows a single part: VEMO V10730564.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

13 Fuse parts for the 2015 Audi A3 come from 2 brands — LITTELFUSE and BUSSMANN. The "Popular" part is LITTELFUSE ATO10.

In the 10 Amp grade, LITTELFUSE supplies 2 parts: grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO10.

The 15 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO15 is listed in this group.

The 20 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO20 is listed in this group.

In the 25 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO25.

In the 30 Amp grade, LITTELFUSE supplies 2 parts: grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO30.

The 35 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "35 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATC35 is listed in this group.

The 40 Amp section lists 2 options from LITTELFUSE — grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO40 is listed in this group.

In the 5 Amp grade, LITTELFUSE supplies 2 parts: grouped under the catalog's "5 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO5.

In the 50 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MAX50.

This table covers the HID Lighting ballasts. Read more

3 HID Lighting Ballast parts are listed for the 2015 Audi A3, from DORMAN, ÜRO PARTS and VEMO.

This group includes DORMAN 601067, ÜRO PARTS 8K0941597B and VEMO V10730372.

This table covers the modules that control the exterior lighting. Read more

3 Lighting Control Module (LCM) parts are listed for the 2015 Audi A3, from VEMO and ÜRO PARTS.

Listed part numbers: ÜRO PARTS 7PP941329M, VEMO V10730536 and VEMO V10730454.

This table covers the ultrasonic park-aid sensors in the bumper. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

11 Parking Aid Sensor parts are listed for the 2015 Audi A3, from STANDARD MOTOR PRODUCTS, VARIOUS MFR, VEMO and 1 other brand. STANDARD MOTOR PRODUCTS PPS120 carries the "Popular" badge.

This table covers the Rain sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

5 Rain Sensor parts are listed for the 2015 Audi A3, from VEMO and VNE. VEMO V10721604 carries the "Popular" badge.

This group includes VEMO V10721604, VEMO V10721603 and VEMO V10721602 and the remaining parts above.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

5 Speed Sensor parts for the 2015 Audi A3 come from 5 brands — HOLSTEIN, VEMO, WELLS and 2 other brands. The "Popular" part is WELLS 5S12520.

The Economy section lists 2 options from HOLSTEIN and VEMO — the catalog's value-priced group. HOLSTEIN 2VSS0382 is listed in this group.

In the Standard Replacement grade, WELLS, DELPHI and STANDARD MOTOR PRODUCTS supply 3 parts: built to original-equipment specification. A representative part number is WELLS 5S12520.

Listed part numbers: WELLS 5S12520, HOLSTEIN 2VSS0382 and VEMO V10721277, plus the other parts above.

This table covers the Starter armatures. Read more

BOSCH supplies both parts for the 2015 Audi A3.

Part numbers include BOSCH 1986SE1877 and BOSCH 1986SE1584.

This table covers the Starter Brush Holder assemblies. Read more

2 Starter Brush Holder Assembly parts for the 2015 Audi A3 come from BOSCH.

Listed part numbers: BOSCH 1004336506 and BOSCH 1986SE1602.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

23 Starter Motor parts are listed for the 2015 Audi A3, from BOSCH, PURE ENERGY, WAI GLOBAL and 6 other brands. TYC 119214 carries the "Popular" badge.

In the New grade, WAI GLOBAL, BOSCH, TYC and 3 other brands supply 11 parts: brand-new units rather than rebuilt ones. A representative part number is TYC 119214.

In the Remanufactured grade, PURE ENERGY, BOSCH, REMY and 2 other brands supply 10 parts: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 19490.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

BOSCH supplies both parts for the 2015 Audi A3.

This group includes BOSCH 1986SE1696 and BOSCH 1986SE1698.

This table covers the regulators that control alternator output voltage. Read more

2 Voltage Regulator parts for the 2015 Audi A3 come from 2 brands — BOSCH and VEMO.

Listed part numbers: BOSCH 1986AE0081 and VEMO V10771078.