Better hurry, there are only 2 weeks of summer left.Trying to get this sorted out before the winter hits. Bentley is of no help. All it shows is the power supply to Z35. Doesn't show where the switched originates from. My fuse and connections is/are good and VCDS shows the heater is getting 14V at the switch but only reaches 30A and then drops to 20A immediately. I imagine it is indeed the element. Anybody have a detailed wiring diagram so I can check the switch wiring before I shell out some decent coin? Also, is there multimeters available that will measure up to 80A, mine only goes to 10A?
Im confused. Here is what i've got...Nothing really to check. Mine only reached 30A on the output test when it should be nearly 80A. It would not activate at all through the heater controls.
I tested it again this morning with the coolant temperature under 30 Celsius and i can confirm that the heater actually produces heat when activated through vagcom
My quest now is to find out why the climate controls cannot activate the heater when VAGCOM is able to.
BINGO! had a chance to check out the surface mount resistors and sure enough
Try to verify and resoldering all those 5 resistors on the circuit board, those ones with coulorred circles on them; was a solution for some users on a local forum, hope it will help you resolve the problem.
I dont think you can test the resistance accurately with out removing themI checked resistance on all 5 resistors and determined three of the five resistors read 62 Ohms and other two 10 Ohms. I also checked for continuity and discovered there is no continuity in the resistors with the higher resistance despite the fact that there is no obvious breaks to the naked eye.
I agree with you on not being able to accurately read the resistance.I dont think you can test the resistance accurately with out removing them
from the board. all i did was a quick touch up in the hopes nothing else was wrong and it worked.