|
NW Washington | Maybe it has a "fusible link" in the electrical system that has failed. Here is some Google AI on this subject.
AI Overview
Learn more
A fusible link in a VW Jetta, and in many vehicles, is a wire designed to melt and break the circuit in case of a short circuit or excessive current, preventing electrical fires. They are often located near a main harness connection and might have a current capacity tag attached.
Location and Purpose:
Fusible links are strategically placed in wiring harnesses to protect larger wires from voltage spikes and potential fires caused by extreme current overload.
They act as a circuit breaker that bypasses the vehicle's fuse box.
They are typically found in areas with high current flow, like the alternator harness or near the battery terminals.
Troubleshooting and Replacement:
A melted or damaged fusible link can cause a car to not start, experience intermittent electrical issues, or have a dead battery.
To replace a fusible link, you need to:
Identify the damaged link and its size.
Ensure the replacement link is of the correct size and amperage.
Remove the old link and install the new one.
It's crucial to address the underlying issue that caused the fusible link to fail (e.g., a short circuit) to prevent future failures.
Example in a 2004 Jetta GLS:
A 2004 VW Jetta GLS can have a wiring issue with the alternator harness where the fusible link may melt, disconnecting the alternator and causing the battery to die.
Some solutions for this issue include replacing the alternator harness, alternator, fuse box, or spade flat fuses.
This video demonstrates how to replace a fusible link when a car won't start:
19s
ChrisFix
YouTube · Mar 12, 2015 | |
|
Volkswagen Jetta won’t start
