2015 Audi A4 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

17 Alternator / Generator parts for the 2015 Audi A4 come from 10 brands — PURE ENERGY, WAI GLOBAL, BOSCH and 7 other brands. The "Popular" part is SKP SK211706.

The New section lists 7 options from WAI GLOBAL, SKP, ULTRA-POWER and 3 other brands — brand-new units rather than rebuilt ones. SKP SK211706 is listed in this group.

The Remanufactured section lists 8 options from PURE ENERGY, REMY, TERREPOWER and 2 other brands — factory-rebuilt units with new wear components. BOSCH AL9452X is listed in this group.

2 further parts sit outside the graded sections, with the same engine-level match.

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

6 Alternator / Generator Pulley parts are listed for the 2015 Audi A4, from LITENS, INA, VEMO and 2 other brands. INA EA0276 carries the "Popular" badge.

Part numbers include INA EA0276, VEMO V10230003 and CONTINENTAL 49934, among others listed above.

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

39 Battery parts are listed for the 2015 Audi A4, from ACDELCO, DEKA, LUCAS and 6 other brands. DEKA 9A48 carries the "Popular" badge. AGM (Extended Life) and Performance AGM (Extended Life + Increased Power) are all represented, and AGM (Extended Life) alone accounts for 35 parts.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

This group shows a single part: VNE 700039.

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

7 Battery Current Sensor parts for the 2015 Audi A4 come from 4 brands — WELLS, STANDARD MOTOR PRODUCTS, DORMAN and 1 other brand. The "Popular" part is DORMAN 601702. 6 parts fit every engine; the other 1 is engine-specific.

This group includes DORMAN 601702, HELLA 010942901 and STANDARD MOTOR PRODUCTS BSC5 and the remaining parts above.

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

10 Fuse parts are listed for the 2015 Audi A4, from LITTELFUSE and BUSSMANN. LITTELFUSE ATO15 carries the "Popular" badge. All of them fit every engine offered in the 2015 A4.

The 10 Amp section lists 2 options from LITTELFUSE — grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE LMIN10 is listed in this group.

In the 15 Amp grade, LITTELFUSE supplies 2 parts: grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO15.

In the 20 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE ATO20.

The 25 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO25 is listed in this group.

The 30 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO30 is listed in this group.

In the 35 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "35 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATC35.

The 5 Amp section lists 2 options from LITTELFUSE — grouped under the catalog's "5 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE ATO5 is listed in this group.

This table covers the HID Headlamp igniters. Read more

One part is listed for the 2015 Audi A4 — ÜRO PARTS 8K0941597E.

This table covers the HID Lighting ballasts. Read more

5 HID Lighting Ballast parts for the 2015 Audi A4 come from 4 brands — VEMO, WELLS, DORMAN and 1 other brand. The "Popular" part is WELLS 6R1084.

This group includes WELLS 6R1084, DORMAN 601067 and MARELLI LRB290 and the remaining parts above.

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

6 Lighting Control Module (LCM) parts for the 2015 Audi A4 come from 3 brands — WELLS, MARELLI and VEMO. The "Popular" part is VEMO V10730387KIT1.

This group includes VEMO V10730387KIT1, MARELLI LRB340 and MARELLI LRB400 and the remaining parts above.

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

6 Parking Aid Sensor parts for the 2015 Audi A4 come from 5 brands — VALEO, DORMAN, SKP and 2 other brands. The "Popular" part is DORMAN 684014.

This group includes DORMAN 684014, VALEO 890001 and SKP SK684014 and the remaining parts above.

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

2 Rain Sensor parts for the 2015 Audi A4 come from VEMO.

Part numbers include VEMO V10721602 and VEMO V10721604.

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

2 Starter Motor parts for the 2015 Audi A4 come from 2 brands — FVP and PURE ENERGY.

This group includes FVP 19516 and the remaining parts above.