Seat Leon Diesel Battery Discharge Issue

I am writing to describe an issue I'm experiencing with my 2002 Seat Leon, diesel engine, with approximately 71900 km. I am observing a heavy vehicle battery discharge. The symptoms include an error message displayed within the speedometer, weak and/or flickering lights, and difficulty starting the engine, particularly after the vehicle has been stationary for a prolonged duration. Furthermore, an error is stored in the error memory relating to 'excessive vehicle battery discharge'. I suspect a defective battery sensor. I'm seeking advice before potentially incurring expenses. Any insights regarding this issue would be greatly appreciated.

4 comment(s)

That does sound frustrating. I had a similar issue with my older Volvo, albeit a different make. The symptoms you describe – error messages, flickering lights, difficulty starting – are very similar to what I experienced. Has the vehicle battery been tested under load? Have you observed any parasitic battery drain?

Thank you for your response. You mentioned a parasitic battery drain. Could you elaborate on how that was diagnosed and what the root cause was in your case? I have checked basic things such as lights being off etc. but I am not sure how to identify a significant parasitic drain.

In my case, after a lot of head-scratching, the Volvo workshop discovered a faulty module in the electrical system that was not shutting down properly, causing a persistent battery drain. It seems quite a complex problem to diagnose without the correct equipment and expertise. It might be worth having a workshop check it out if you're not sure as electrical issues are difficult to pinpoint.

I appreciate you sharing your experience. Your input affirmed my suspicion. It was indeed the battery sensor. Replacement set me back 315€. Now, everything appears to be functioning correctly. Thanks again for the help.

Join the discussion now: