Q: My 2001 VW Passat battery keeps draining. I did a parasitic test on it today and removed the neg cable and touched the cable and t

asked by on

My 2001 be Passat battery keeps draining. I did a parasitic test on it today and removed the neg cable and touched the cable and the neg battery side. It was showing 11.85 amp draw. I did the fuse test and removed each fuse on the drivers side, left of the dashboard. Nothing dropped. I did someresearch and it seemed it might be a bad diode in the alternator so I remove the alternator and then did the test again and the draw was the exact same with the alternator removed completely. Do you have any idea what could case that type of drain that would not show in any of those tests? If it's a short in the 13 panel relay section, will it be possible for me to figure out where the problem is coming from? I have basically 0 experience working with cars.

My car has 128000 miles.
My car has a manual transmission.

Hello. There are a lot of reasons as to why this can occur. If the vehicle has anything aftermarket on it I would check that out first. If the vehicle is all stock then most of the time this is caused by an ignition switch or one of the modules is not shutting down. These systems will need to be diagnosed by an electrical specialist.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My 2001 VW Passat battery keeps draining. I did a parasitic test on it today and removed the neg cable and touched the cable and t

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My car won't start. The odometer reads: NO BUS.

The error code "no bus" means the PCMS are not communicating with each other. Likely one of them has gone bad, or there is a bad connection. You can do further testing on them using a multimeter. This will require...

Q: There is a rattling noise on the passenger side of my stick shift VW Jetta.

Hi Katie. Thanks for contacting us tonight. A consistent rattle like you've described is typically caused by a loose exhaust bracket - which tends to occur when a car is older than 10 years old just due to normal wear...

Q: My gear shifter and key are stuck in my 2006 Volkswagen Passat

Hello. It sounds like you have a battery issue. When the battery dies it will cause these system to lock due to the lack of voltage. I would start by checking the battery. If the battery is fine then it...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...