2021 Audi Q3 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

11 Alternator / Generator parts for the 2021 Audi Q3 come from 8 brands — WAI GLOBAL, PURE ENERGY, TERREPOWER and 5 other brands. The "Popular" part is TYC 221081.

The New section lists 4 options from WAI GLOBAL, TYC and BOSCH — brand-new units rather than rebuilt ones. TYC 221081 is listed in this group.

The Remanufactured section lists 6 options from PURE ENERGY, TERREPOWER, FVP and 1 other brand — factory-rebuilt units with new wear components. FVP 10273 is listed in this group.

1 further part sits outside the graded sections, with the same engine-level match.

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

16 Battery parts are listed for the 2021 Audi Q3, from ACDELCO, DEKA, LUCAS and 4 other brands. ACDELCO 47AGM carries the "Popular" badge. 12 parts fit every engine; the other 4 are engine-specific.

The AGM (Extended Life) section lists 14 options from ACDELCO, DEKA, LUCAS and 3 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. ACDELCO 47AGM is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 2 options from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT61047 is listed in this group.

This table covers the Cruise Control Distance 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 Cruise Control Distance Sensor parts are listed for the 2021 Audi Q3, from ÜRO PARTS and VEMO.

Listed part numbers: ÜRO PARTS 2Q0907561J and VEMO V10720437.

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 for the 2021 Audi Q3 come from 3 brands — STANDARD MOTOR PRODUCTS, VARIOUS MFR and HELLA. The "Popular" part is STANDARD MOTOR PRODUCTS PPS120. 6 parts fit every engine; the other 2 are engine-specific.

This group includes STANDARD MOTOR PRODUCTS PPS120, STANDARD MOTOR PRODUCTS PPS112 and HELLA 358141711 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

One part is listed for the 2021 Audi Q3 — VEMO V10720249.

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

6 Starter Motor parts for the 2021 Audi Q3 come from 5 brands — BOSCH, WAI GLOBAL, PURE ENERGY and 2 other brands. The "Popular" part is WAI GLOBAL 30273N.

The New section: 2 options from WAI GLOBAL and BOSCH. WAI GLOBAL 30273N is listed in this group.

The Remanufactured section: 4 options from PURE ENERGY, BOSCH, REMY and 1 other brand. PURE ENERGY 19168 is listed in this group.

Listed part numbers: WAI GLOBAL 30273N, BOSCH SR0894N and PURE ENERGY 19168, plus the other parts above.