How should the rear brake light switches be installed for a secure fit on Audi A4?

To ensure that the brake light switch fits safely, the manufacturer suggests that the brake light switch should not be fitted twice. Starting with the knee bolster of the driver side removed. Then unscrew the electrical connector of brake light switch. Turn the switch about 45 degrees in the opposite direction and ensure that it comes out of the bracket. Pull the plunger on the switch out completely before instalation. When the brake pedal is completely released install the switch into its bracket with the opposite of the removal procedure which is to install the switch correctly, and the switch will self-adjust. Once that is done, attach the electrical connector and ensure that the brake lights are functioning well. Lastly, change the knee bolster.

Genuine Audi A4 Brake Light Switches

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3 Brake Light Switches found

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Audi A4 Stoplamp Switch Part Number: 8E0-945-515
$41.14 MSRP: $68.00
You Save: $26.86 (40%)
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Product Specifications
- Other Name: Switch
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2003 Audi A4 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 3.0 L GAS
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Audi A4 Stoplamp Switch Part Number: 1K2-945-511-RDW
$24.83 MSRP: $39.72
You Save: $14.89 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch
- Replaces: 1K2-945-511-NAR
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2008-2009, 2003-2006 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
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Audi A4 Stoplamp Switch Part Number: 3B0-945-511-B
$13.09 MSRP: $17.45
You Save: $4.36 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch
- Replaces: 3B0-945-511-A, 3B0-945-511, 3B0-945-511-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2003-2005 Audi A4 | Base | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS

Audi A4 Brake Light Switches

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Audi A4 Brake Light Switches Parts and Q&A

Stoplamp Switch
1K2-945-511-RDW
Q: How should the rear brake light switches be installed for a secure fit on Audi A4?
A:
To ensure that the brake light switch fits safely, the manufacturer suggests that the brake light switch should not be fitted twice. Starting with the knee bolster of the driver side removed. Then unscrew the electrical connector of brake light switch. Turn the switch about 45 degrees in the opposite direction and ensure that it comes out of the bracket. Pull the plunger on the switch out completely before instalation. When the brake pedal is completely released install the switch into its bracket with the opposite of the removal procedure which is to install the switch correctly, and the switch will self-adjust. Once that is done, attach the electrical connector and ensure that the brake lights are functioning well. Lastly, change the knee bolster.