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Tail Light Socket - Audi (8V4-945-257-A)
- 8V4-945-257-A
- MSRP: $93.32
- Discount: $22.49 (24.1% off)
- Sale Price: $70.83
- MSRP: $93.32
Review Fitment & Product Details
Details
- Brand:
- SKU:
8V4-945-257-A
- Description:
Audi part number 8V4-945-257-A, the factory Tail Light Socket, generates, stores, or delivers the electrical energy the vehicle depends on, and because Audi systems are voltage sensitive, marginal power delivery creates faults that look unrelated to charging. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Fitment varies by model year, trim, and option content, so verify before ordering.
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Vehicle Fitment
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Key Product Information
Additional Information
| SYMPTOMS | Typical failure symptoms reported on vehicles fitted with 8V4-945-257-A: slow cranking, a battery or charging warning, multiple unrelated warning lamps appearing at once, electrical accessories that reset, or a vehicle that will not wake after sitting. Symptoms vary by model year and option content, so confirm fitment before ordering. |
| TROUBLESHOOTING | Diagnostic approach for 8V4-945-257-A: load test the battery and measure charging output and voltage drop across cables before replacing parts, since corroded grounds mimic both alternator and battery failure. A scan tool with Audi specific coverage will show considerably more than a generic code reader. |
| INSTALLATION | Replacing 8V4-945-257-A requires the battery to be disconnected in the correct order, and on vehicles with battery energy management the new battery must be registered with a scan tool. Torque values differ by model and production date, so consult the factory literature. |
| MAINTENANCE | Keeping 8V4-945-257-A in service means keeping terminals clean and tight, confirming charging output at service, and charging the battery if the vehicle sits for extended periods. Routine inspection catches most failures in this area before they strand the vehicle. |
| GENERAL_NOTES | Note for part 8V4-945-257-A: battery registration matters because the charging strategy adapts to the battery's age and capacity, and skipping it shortens the replacement's life. Availability and part number supersession can change, so confirm the current number when ordering. |
| REPLACEMENTS | Associated components for the 8V4-945-257-A repair: terminal clamps, hold down hardware, and corroded ground straps are renewed at the same time to keep resistance low across the circuit. Confirm the related part numbers against the vehicle identification number. |
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