why are my brake lights not working on my Volkswagen Passat B8 (2015-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the negative battery terminal to prevent electrical shocks.

2. Replace Brake Light Bulbs

• Tools Required: Socket set or screwdriver (depending on bulb type)
• Remove the tail light assembly by unscrewing the retaining screws.
• Carefully pull the tail light assembly out and remove the old brake light bulbs by twisting them counterclockwise.
• Install new bulbs by inserting them into the socket and twisting them clockwise until secure.

3. Replace Brake Light Fuse

• Tools Required: Fuse puller or needle-nose pliers
• Locate the fuse box (usually under the dashboard or in the engine compartment).
• Identify the brake light fuse using the diagram on the cover or in the owner’s manual.
• Remove the old fuse and inspect it for continuity. Replace with a new fuse of the same amperage.

4. Replace Brake Light Switch

• Tools Required: Socket set or wrench, possibly a flathead screwdriver
• Locate the brake light switch mounted on the brake pedal assembly.
• Disconnect the wiring harness from the switch.
• Remove the mounting screws holding the switch in place and take out the old switch.
• Install the new brake light switch and secure it with screws. Reconnect the wiring harness.

5. Reassemble and Test

• Reassemble the tail light assembly if bulbs were replaced.
• Reconnect the negative battery terminal.
• Test the brake lights by pressing the brake pedal to ensure they illuminate correctly.