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Aux Heater Fault
Just done a first for me VCDS scan and then cleared all codes and re-scanned. Had 2 sticky faults. One is a parking sensor that I knew about that I will get replaced. The other fault was Aux Heating. I'm assuming this is the Webasto for pre-heating the engine in the cold. Here is the VCDS scan fault:
Address 18: Aux. Heat Labels: None Any ideas what this is or how to clear it? Thanks
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Lee 2017 Nissan Leaf Tekna |
#2
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Done a couple of the Webasto style aux heaters on Range Rover sports , they flag a code similar ' no flame seen ' or some such , on them it's been the glow plug in the burner chamber , strip down of the unit to get at them ,on the range rovers they are really easy to access , on the Audi you may know they are behind the bumper and still a bit more to get it all out after bumper off .
There is a few tests on vcds with regards to activations maybe worth trying them , the glow plug can get fouled with old diesel if it's not run for a long time ..... worth a try before stripping out Lee |
#3
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You could try an adaptation - maybe it is a 'sticky' code for safety reasons?
Unlock heater module by saving a 1 in Adaptation Channel 007, then clear fault codes. I can't remember but you may need to go in Security first and enter a log in code, but VCDS should popup with a speech bubble with the code in it. |
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Thanks guys. That's interesting. I'm a VCDS amateur (only bought it the other week and tried it for first time yesterday) so I may be back with some more questions if I can't figure things out. I thought it a bit odd that there was no other info such as dates etc with this fault.
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Lee 2017 Nissan Leaf Tekna |
#5
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Yea as above the units will lock themselves out for safety reasons, the BMW's would need the fuse pulling to reset the unit so you could then reset the codes.
Just found this, your heater is a thermo top z usually http://www.seatronic.no/pdf/Webasto/...P-Z_Manual.pdf
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Just tried the adaptation and no joy. Just faults again with the same thing. Is it odd that there is no further data with the fault other than the description "01406 No Flame"?
I may try and pull the fuse and see what happens. As far as I know it always seems to have worked in the past (engine heated up quick and exhaust smoke at front of car), but we haven't really had any temps below 5 to try it this year. I'm wondering if there is a plug off or a connector loose. Where is this thing situated on a 4.2TDI ? I had a dealer do work on the front of the car 2 years ago when I hit a fox. Maybe it hasn't worked since then. The VCDS test seemed to be limited to some kind of combustion chamber fan test. I didn't try that. Maybe I will after I check the fuse. Thanks for the links and hints. I wonder if there is any way of performing a functional test on it via VCDS or the menu systems just to get it on and heated up and running. That might clear any faults or at least tell me if it's dead or not.
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Lee 2017 Nissan Leaf Tekna |
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