Tweet
Hi Guys,
My car 2010 Passat Wagon TDI (highline)
I recently purchased a Heavy Duty towbar from Towbars Australia LINK. Installed 'professionally from XXX.
The next morning when leaving for work, car wouldn't start, battery dead. Airbag fault appeared on MFD. When I called the installer during the day he said the battery may be flat or faulty, then blamed the alternator, etc. Having said that the car was fine previously. When I returned home from work (my wife's car). I decided to jump start the car...worked a treat. I drove it around for 30 mins and came home.
The next day battery was flat again. I jumped started it (again...started fine) and drove to work. When leaving work, the battery was flat again. I jumped started...again, and drove home. When I parked at home, I switched off the car waited for 15-20 seconds and tried to start it again. Car would not start!!!
When the car is running the voltage across the batter is 14.33-14-45V, which leads me to believe that my alternator is ok.
With the car off, the battery voltage is about ~10.5V, which leads me to believe the it is really flat. (or there is a damaged cell...only a theory, haven't had it tested).
When I disconnect the positive terminal and connected a multimeter in series, it read ~2A current draw (seems very high)
Question 1: How much current would my car draw with the ignition off?
To find the source of the drain, I started testing the interior fuses. These are my results;
Fuse no. [Fuse] - Measured current
SC12[10A] - 0.29A
SC15[5A] - 1.43A
SC25[20A] - 0.01A
SC28[30A] - 0.05A
SC37[25A] - 0.1A
I have found a fuse layout on the internet. LINK
Question 2
I don't know how the electrical wiring for the towbar was wired, the installed ensures me that its not he problem. I have brought a new battery, but do not want to install it if I will have the same problem.
Has anyone encountered this issue? Or could anybody how I can resolve this issue. (know any good VW auto elecs.in Melbourne that could help me out?)
Any help would be much appreciated.
Cheers,
Zoobz
My car 2010 Passat Wagon TDI (highline)
I recently purchased a Heavy Duty towbar from Towbars Australia LINK. Installed 'professionally from XXX.
The next morning when leaving for work, car wouldn't start, battery dead. Airbag fault appeared on MFD. When I called the installer during the day he said the battery may be flat or faulty, then blamed the alternator, etc. Having said that the car was fine previously. When I returned home from work (my wife's car). I decided to jump start the car...worked a treat. I drove it around for 30 mins and came home.
The next day battery was flat again. I jumped started it (again...started fine) and drove to work. When leaving work, the battery was flat again. I jumped started...again, and drove home. When I parked at home, I switched off the car waited for 15-20 seconds and tried to start it again. Car would not start!!!
When the car is running the voltage across the batter is 14.33-14-45V, which leads me to believe that my alternator is ok.
With the car off, the battery voltage is about ~10.5V, which leads me to believe the it is really flat. (or there is a damaged cell...only a theory, haven't had it tested).
When I disconnect the positive terminal and connected a multimeter in series, it read ~2A current draw (seems very high)
Question 1: How much current would my car draw with the ignition off?
To find the source of the drain, I started testing the interior fuses. These are my results;
Fuse no. [Fuse] - Measured current
SC12[10A] - 0.29A
SC15[5A] - 1.43A
SC25[20A] - 0.01A
SC28[30A] - 0.05A
SC37[25A] - 0.1A
I have found a fuse layout on the internet. LINK
Question 2
I don't know how the electrical wiring for the towbar was wired, the installed ensures me that its not he problem. I have brought a new battery, but do not want to install it if I will have the same problem.
Has anyone encountered this issue? Or could anybody how I can resolve this issue. (know any good VW auto elecs.in Melbourne that could help me out?)
Any help would be much appreciated.
Cheers,
Zoobz