Auxiliary heater issues

[amebb]

I wanted some help so i can fix the issue with my webasto AUX heater.
The weathere here in the UK is not too bad at the moment but in the next couple of months the temputure will be cold and nasty.


So, i have in the past tried to set the time the heater comes on and off but nothing happens.


The fuses have been checked too.


Is there a guide out there that will help me check the AUX Heater that i can use?


Any help much appreciated.


Thank you

[wpoll]

There are a number of prerequisites that have to be met before the Webasto ThermoTop Z will run, e.g. it won't run if the outside temp is too warm.

INPA can run basic Webasto ThermoTop Z tests but if you don't have access to that, then a simple way to test the operation is put a jumper between pin 1 on X642 (RT/GE - Red/Yellow) to pin 1 on X764 (WS/GN - White/Green) - this should start and run the Webasto. If it does, let it run for a few minutes before removing the jumper. (see attached image).

This thread might also help - it outlines the process of adding a remote start to the Webasto ThermoTop Z and includes some circuit information.

https://xoutpost.com/bmw-sav-forums/...start-kit.html

A more complete discussion of the Webasto ThermoTop Z in our cars can be found here: -

https://xseries-forum.com/forum/view...a9c68427d4535a

Good luck.