Aux Heater Fault

[Mechcanico Lee]

[quote=Lee S;105134]Bollox... The Aux Heater fired up great on the timer but then conked out due to low battery voltage... Baaah !! [/QUOTE

Yes I have found this an issue with the aux heater , I use the car near enough every day but I don't work far away from home , so every morn slow progress in the school traffic and same coming home so the battery does not get a ' deep charge cycle ' and the cold weather takes its toll on the battery over night so I find the aux heater will work ok for a couple of mornings and then knock of due to the battery regulation monitoring safe guard shut down and the 'quiescent current ' fault codes .

I think if your car does get a good run everyday it will be ok , does anyone have any info on the factory system for aux heater that has the extra battery ??
I have already replaced the battery with a Bosch unit better than oe spec but still have issues ..... I have started taking a longer route to work just to give it some charge time ....hehe ,not a bad thing , would be interesting to see how the factory supplied aux heating cars work this out ... maybe use an AGM battery for the aux heater side ??

Lee s ....
Go into battery regulation module , just go through the adaptations ...think it's about group 6 have a look at the s.o.c block ....state of charge percentage , I have found when aux heater shuts down its normally around the 50 % area , the car always starts no problem though even after it has shut it off , if I take the car for a run over an hour or so the s.o.c is back up to 100%

[Lee S]

Well I have enabled the battery meter via the hidden menu and it was allegedly at 20%. Had to do about 40 miles to get it back to 100%. See how long it lasts. It's warming up again tomorrow so probably wont need it but I will give it a try anyway.

[Lee S]

Didn't work... came on and fired up and went off after about 4 or 5 minutes after a few gurgles and groans. Looks like I don't have the pump fitted so a bit odd as to why channel 10 was coded to '3' but never mind. I may get the pump fitted for next year. Just glad that the Webasto is serviceable and working fine. Thanks all.

[Mechcanico Lee]

What about doing what Snap D says about getting the 'rest pump ' to do the pumping

[Lee S]

How do I do that? Do I just add Snap's adaption codes/values in and that's it? Sorry.. I'm a VCDS dunce...

[Mechcanico Lee]

I would say Snap D has more knowledge than me in this field , im really not sure which adaptation gets the rest pump working , hopefully he will be along at some point and give you a lift .

Keep at it mate is a great function , mine did a 30 min run this morning before i got in the car ...... it was lovely and toasty inside hehe

[snapdragon]

You know what - I am doubting what I said, because today it was timed to come on and the car was cold. The times when it was warmed up is when I went out before breakfast and without turning on ignition I held the on/off button on the HVAC controls until it came on, set both side to HI and locked up and went back inside. When I do this it is very warm 20 minutes later, but doesn't seem to be the case when on the timer - it comes on but seems to have little effect.
Not enough fuel to test now it is disabled when the low fuel warning is on.