2020 Audi A5 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

5 Alternator / Generator parts are listed for the 2020 Audi A5, from PURE ENERGY, TYC, REMY and 1 other brand. TYC 221083 carries the "Popular" badge.

In the New grade, TYC supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is TYC 221083.

In the Remanufactured grade, PURE ENERGY, REMY and TERREPOWER supply 4 parts: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 14074.

Listed part numbers: TYC 221083, PURE ENERGY 14074 and PURE ENERGY 14061, plus the other parts above.

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 2020 Audi A5 come from 2 brands — CONTINENTAL and LITENS.

This group includes CONTINENTAL 49909 and LITENS 920090A.

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

41 Battery parts for the 2020 Audi A5 come from 9 brands — ACDELCO, DEKA, LUCAS and 6 other brands. The "Popular" part is ACDELCO 47AGM. They are grouped as AGM (Extended Life) and Performance AGM (Extended Life + Increased Power), with AGM (Extended Life) the largest group at 37 parts from ACDELCO, DEKA, LUCAS and 5 other brands.

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

3 Battery Current Sensor parts are listed for the 2020 Audi A5, from DORMAN, HELLA and WELLS.

Listed part numbers: DORMAN 601702, HELLA 358158001 and WELLS 5S16132.

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

5 Lighting Control Module (LCM) parts are listed for the 2020 Audi A5, from MARELLI and VEMO. VEMO V10730668 carries the "Popular" badge.

This group includes VEMO V10730668, MARELLI LRE539 and MARELLI LRB340 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

8 Parking Aid Sensor parts are listed for the 2020 Audi A5, from STANDARD MOTOR PRODUCTS, VARIOUS MFR and HELLA. STANDARD MOTOR PRODUCTS PPS120 carries the "Popular" badge.

Part numbers include STANDARD MOTOR PRODUCTS PPS120, STANDARD MOTOR PRODUCTS PPS112 and HELLA 358141711, among others listed above.

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

8 Starter Motor parts are listed for the 2020 Audi A5, from BOSCH, PURE ENERGY, TYC and 3 other brands. TYC 116428 carries the "Popular" badge.

New: 3 parts, from TYC, BOSCH and WAI GLOBAL. A representative part number is TYC 116428.

Remanufactured: 5 parts, from PURE ENERGY, BOSCH, REMY and 1 other brand. A representative part number is PURE ENERGY 12784.

Listed part numbers: TYC 116428, BOSCH SR0797N and WAI GLOBAL 16428N, plus the other parts above.