How can i check if webesto heater is working

Au2ro

Member



Sent from my iPhone using Tapatalk
Yea, it's all verry well turning it with a screwdriver when the Webasto is out of the engine bay. To move it while in the engine bay I found that I had to move the air filter that sits above the Webasto and get both hands, one either side of the Webasto, and move it with one finger from each hand. I now actually have little blisters on each middle finger after doing that today!

How difficult is it to take out to service it anyway?
 

PlasticMac

Member
I think, (can't check as no Webasto), you can test the Webasto kit with VCDS, using the appropriate (HVAC or Aux Heater I'd guess) Controller Output Tests. You'll need a registered (£75) copy of VCDS Lite for this.

Mac.
 

steveb

A2OC Donor
I have had an issue with my Webasto never coming on since I got the car .
One of the first things I did wen I got it all those years ago was drain and fill the coolant system - and that has been done a few tines since then, never knowing about the Webasto bleed screw.
I did try bleeding and the ice cube trick today, but the Webasto still never came on even though it thought that it was 5 degrees C.
I was advised to get a new glowpin/plug from a scan in the summer so I will be getting one soon to try that.

I found this link for a kit - Webasto Thermo Top E/C/P/Z glowpin kit | 9017813B But it states
"This glow pin repair kit only applies to heaters TT-E, TT-C, TT-P, TT-Z
manufactured from >2004."
and mine is a 2002. I will ask the supplier if they have the same kit for 2002 model.
I think you will findthe burner tube needs replacing as well, while you have the unit apart
 

Johnboy374

New Member
Have you bled the hose to ensure you have not got an air lock in the Webasto water pipe
Small bleed valve/ nipple on hose under brake fluid reservoir, this fixed mine when I carried out a full fluid change recently,
Sensor for Webasto is in the lower grill use ice pop or ice cube to simulate frost/ low temp
Situation.
Hth
Keith
Can you advise if i should bleed the webasto with engine running or off thanks

john
 

kp 115

A2OC Donor
Can you advise if i should bleed the webasto with engine running or off thanks

john
I would try it when you’ve got the engine hot,
It’s quite awkward to get to, if you’ve got a small ratchet set with a flat bit might work or a pair of grips/pliers on the knurled outer ring (turning to the right when viewed from above standing at the front of the car.
Hth
Keith
 

Alfunks

New Member
I plugged a snap on diagnostic machine into the OBD you can re-set the Webasto from there when I first got our A2. Mine cuts in from 7oC and above 7oC the A/C is active I’ve never used the ECON button in the 10 years of ownership and the Webasto works every winter and the A/C is brill as a dehumidifier on damp days and nice and cold in the summer. Happy days 😊
 
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