Aux Heater ?

ICANTBELIEVEIT · October 6, 2005

Yeah, sort of guessed that guy at VW was talking bs but I am "only" a woman driver! :o He said that after 22 years at VW he knows everything about the cars!!! :lol: Yeah, right!! It probably didn't help that I tried to get new lightbulb for non-existent righthand reverse light, because I was confused by warning lamp, too. If I knew as much about cars as you guys do, I would have kept my lovely old 97 Sharan auto petrol. Best car I ever had, probably because it was never serviced at VW!

Here is just some info for all you newbies. Get the speaker grilles and interior lights from Ford.

Rallim · October 6, 2005

Having owned my Sharan for a year now and seen all the posts on auxillary heaters I've always thought, this doesn't apply to me as I dont have one, confirmed (well I thought it was) when I did a module check with VAG-COM and the Aux Heater didnt reply... :o

Well I've finished living in denial and realised it may well be fitted looking at posts saying that all the diesels have them.. a quick looksie under the rear passenger dooor and lo and behold there she sits.... and the main reason I didnt think I had one... its never worked. :o

So VAG-COM and I went on a mission last night to talk to the aux/booster heater (sounds a bit like R2D2 talking to the Millenium Falcon's lightspeed drive.... if only :P ). It refused to talk (after several attempts) until I started the engine which seemed to kick its communication into life. Sure enough it contained five fault codes, all flame out errors. I have cleared the codes and performed the VAG-COM tests, both the pump and the fan operated, (well they made a noise at any rate...). Is there any way using VAG-COM to get it to attempt to fire up properly or do I need to short out the sensor?

From the various post I would suspect the glow plug although there are no glow plug errors but I want to make sure before I buy one / strip the unit down.

TIA

Gordon.

tim-spam · October 7, 2005

So long as the fan and fuel pump are working, heater failure is almost always glow plug related. If the car is a few years old, the glow plug is probably past its best, so replacement would be no bad thing. As for using VAGCOM to fire the heater up, I don't think this is possible - shorting out the air temperature sensor will be the best way.

Masked Marauder · October 7, 2005

So long as the fan and fuel pump are working, heater failure is almost always glow plug related. If the car is a few years old, the glow plug is probably past its best, so replacement would be no bad thing. As for using VAGCOM to fire the heater up, I don't think this is possible - shorting out the air temperature sensor will be the best way.

I can not see an issue with shorting it out permanently in the winter with a low-ampere mini fuse. It cuts out when the engine gets to running temperature anyway.

October 7, 2005

The original Beru (OEM) part no is 0 100 226 228 but it has now been superceeded, although Lloyd is aware of the new part No.

It is not a stock item, and has to be ordered from Germany, but it is the GENUINE OEM part. Cost is......

Galaxy Man · October 7, 2005

The pictures on page 6 helped me very much, thanks Ivor.

Problem for me was trying to take the unit apart, I managed to remove the unit and the bracket from the car(bolts that are attached to the bracket sheered off :D )

Just managed to undo the 4 screws from the cover over the blower though 1 screw I had to drill out :D

But I had to give up going any further as I could not undo the 2 screws and alan key bolts on the end piece to get to the glow plug as they would not budge :angry: and I was running out of time, so it was a case of putting it all back as best as I could and throwing all the tools into the shed.

Anyone else had so much trouble as me, I used plenty of wd40.

GSMGuy · October 7, 2005

Get some sort of fine "pick" and make sure the heads of the torx bolts are clear of corrosion and crap, as this will cause the driver to "cam out" and chew the heads...

Mike

Masked Marauder · October 7, 2005

The original Beru (OEM) part no is 0 100 226 228 but it has now been superceeded, although Lloyd is aware of the new part No.

It is not a stock item, and has to be ordered from Germany, but it is the GENUINE OEM part. Cost is......

marinabrid · October 8, 2005

thats exactly what happen when i did the job, the end cover screws totally rusted over no hope without drillen em out

i gave up put it back together and very strange.....the thing burst into life and been runnin a year !

Another?Maybe! · October 9, 2005

Well last Winter I enjoyed the jet engine sound almost every day!

Then early last week, temp was 52F & the familiar noise was there, very reassuring, but...on Friday was 49F and no noise!! Really missing it already.

Guess a trip to Mr Ford is called for as car is still under Ford Direct warranty (if it's covered). Guess they can't do any/much harm to the rest of the car, just fail to get the heater working again, may need an extra sweater from the Ford range!

PeteR

Rallim · October 9, 2005

Woohoo... since my last post I had not had chance to short out the temperature sensor to test the heater since I cleared the faults, but this morning when I stopped at a set of taffic lights (about 3 minutes from home) and lo and behold I can see smoke at the side of the car, and a distant 'turbine' sound. :D :D

Wife did not appreciate the enormity and wonderous-ness of the event, just complained about it being a bit of annoying noise... :(

Anyway I checked to see if had logged any faults later and there was none; so for the moment I'm going to see how it goes before purchasing a new glow plug....

Gordon... thanks for the advice guys, I have printed Ivor's post for future reference! :)

Jeff115 · October 14, 2005

This one's heading for the 5000 views :P

I see that martin's raised another one this year 'just out of curiosity'

For my 2005 tuppence worth:

Mine stopped working; VAG-COM reported flame out, flame interruption, combustion blower fault but dealer insisted that glow plug was fine; I dismantled without disconnecting coolant pipes (as GSMGuy directions) but no apparent fault; I replaced the glow plug (excellent service from Lloyd Parchment @ Hans Motors, thanks Mike ) ; I cleared the DTC's using VAG-COM and it's worked fine ever since.

Glow plug new part no. is 0 100 226 340

Aux heater unit can be removed from under car quite easily when bracket bolts are removed but watch out for dislodged dirt in your eyes ; dont' stretch the wiring harness and support the unit on a block when you drop it down.

The 4 torx screws on the end of the body (control unit) may be heat-seized and dirt clogged so plenty of WD-40 but otherwise replacing the glow plug is not difficult and no specialist tools required.

You'll need a new clip for the fuel pipe (about 5-10mm) and I put some silicone under the the plastic cover of the cover of the water jacket as it has lifted.

Fuel pump and blower unit operation can be tested using VAG-COM without dismantling.

regards,

J.

Masked Marauder · November 9, 2005

I will just throw in my tuppence worth onto the end of this one since winter 2005 closes in.

Glow plugs are available from your VW dealer. They are

Ogben Schmutzel · November 13, 2005

My local garage bought the plug from the SEAT dealer and charged me

Masked Marauder · November 13, 2005

VAG use a structure for their part numbers. The first 3 letters/numbers are the model number. The next 3 digits are the assembly number and the 3 after that the part number for the assembly. Any letters after are revision numbers.