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Engine Specific Info and Questions => IDI Engine => Topic started by: Henchman on December 07, 2009, 07:17:46 am

Title: b3 Passat AAZ won't start after dead battery and alarm HELP!
Post by: Henchman on December 07, 2009, 07:17:46 am

So just finished putting on the winters and going to head off to get a new battery for the winter.  Battery dies before engine catches, when I remove the key the factory alarm starts (did not know I even had one) .   Hook up booster cables, get one more try, battery still too dead.  Leave it a minute, this time when I try, radio and lights go dead when I turn to glow plugs, when I try to start, nothing!  All I hear when I turn the key to the glow plug position is a click from the module under the back seat.

Any ideas?  I have tried disconnecting the battery, to no avail.

Thanks!

Ian

Title: Re: b3 Passat AAZ won't start after dead battery and alarm HELP!
Post by: Henchman on December 07, 2009, 07:34:09 am

The module clicking in the back is 357 959 875 comfort control ecu for power windows it seems.

Title: Re: b3 Passat AAZ won't start after dead battery and alarm HELP!
Post by: Henchman on December 07, 2009, 08:02:19 am

Things are a little better.  I think it may have been low voltage issue. My start battery must be worse off than I thought.  It's now being charged by the worlds most inefficient battery charge (my 7.4l powered motor home!).

Ian