How to Replace Battery Cables in a VW Jetta
- 1). Locate the top-post battery on the driver's side of the VW Jetta behind the headlight under a black cover. Lift the cover off the battery with a flathead screwdriver.
- 2). Loosen the bolt on the black negative battery cable first with a box wrench or cable clamp pliers. Wriggle the cable end off the post. Repeat the process on the red positive cable. Always take off both cables, even if you're only replacing one of them.
- 3). Follow the negative cable to where it's grounded on the front of the frame of the VW Jetta beside the headlight assembly. Remove the end of the cable with a wrench. Track the positive cable to its connection on the starter solenoid on the driver's side of the engine and remove it with a wrench.
- 4). Clean the battery posts with a small wire brush or cable cleaner.
- 5). Attach the new positive cable first, reversing the process in Step 3. Put the negative cable on last and start the car to ensure the connections are working on your VW Jetta.
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