Aux Heater?

[smoggy7]

hi sorry for being a pain guys but can someone explain to me does the aux heater start up everytime the engine starts i have read a lot on this but i am having a slight problem with the heating taking along time to warm up the car. i have just dropped off my kids to school all round trip of about 45 mins and another 10 mins waiting on the driveway and checked underneath the car for the aux heater i felt it

and it was stone cold should this be at least warm or hot? i am getting warm air into the cabin but the needle has hardly moved if i went out for another 30 mins or so then it goes up to the 90 , we are going to change the thermostat anyway as this will be out of the way sort of speak, but all i want to know is should the aux heater be kicking in at all times or now and again, also this jet noise i have heard it for a while when parked up from being out and about most mornings i hear it but for the past 2 or 3 days i havent heard it sorry guys but i really do need some advice from you and what action to take many thanks all

 

 

 

 

 

smogggy

[Masked Marauder]

First of all, remove the plug from the thermal switch and put a 10A mini-fuse in the connector instead.

 

Now see if it works, it should if the coolant is anywhere below normal running temperature.

 

If it still does not work then you need to hook it up to VAG-COM and check for error codes. If you don't have VAG-COM then you need to remove the glow plug and check it's operation.

[smoggy7]

hi masked, thanks for that reply but is that the plug that goes to the aux heater ? so do i take this off and which part do i then put the fuse into the connector on the aux or the connector i take off thanks smoggy

 

 

 

smoggy

[Masked Marauder]

No, the thermal switch is in the scuttle, clipped to the wiper mechanism.

 

http://www.bigtrucker.co.uk/images/heaterswitch.jpg

 

It is on the right hand side and is circled in the image above.

[smoggy7]

thanks masked. since taking to you this morning i decided to take the car back to the dealers as since i had the new water pump fitted it hasnt been right since so i phoned them and said that the aux heater was working the same day it went in and the heating was fine when also the car went in so i will keep you informed of the outcome then thanks mate for the advice cheers smoggy

[Masked Marauder]

Ah, more information! Most likely an air lock in the rear pipes has caused the heater to shut down from overheating. That will require resetting by the dealer if it has.

[smoggy7]

hi masked, sorry about the info should have added the water pump change my apoligies, but i was kind of thinking on the same lines an airlock as you rightly said it is their fault that its there so they causedit so they can fix it they are messing with the wrong guy here when i gets started believe me i havent started yet lol, i will let you know what happens as its booked it for wednesday morning thanks again

 

 

 

 

 

 

smoggy

[smoggy7]

hi all, the rear heater is that connected to the aux heater as i am getting heat and blowers are ok i checked that today or is this a seperate thing from the aux heater due to the switch on the dash board or is this switch used for the aux heater, if this is the rear heater for the aux at least it is working well blowing out warm air anyway lol thanks all

 

 

 

 

 

smoggy

[Guest vr6galaxy]

The rear cabin heater is fed by the engine coolant, as is the front heater, the AUX heater heats the coolant and is stuck in the coolant lines for the rear heater as it a handy

several members state that the AUXheater fires up when the switch on the rear heater :D it probably firesup due to the heat being drawn from the coolant and tripping the coolant heat sensor in the AUX heater circuit :o

[smoggy7]

hi peeps, can i ask if the aux heater isnt working what can this do to my vehicle? i know it is going in tomorrow but i just wanted to ask what it would or could do if it aint working, thanks for all your help guys bit the dealers put the pump on so it should be down to them to repair it surely, oh and i hope they dont think im going to pay up either no chance, as masked rightly siad either it needs to be reset or by coinsidence that my glow plug might have died on me but we will wait and see what they do in the morning as long as they dont fob me off it was working fine before it went in there but not worked since it came out their problem thanks guys

 

 

 

 

 

smoggy7