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Large MPVs -- Ford Galaxy / VW Sharan / SEAT Alhambra: => Ford Galaxy / VW Sharan / SEAT Alhambra => Topic started by: seatalehandro on October 07, 2019, 08:20:17 am

Title: Aux heater - back from the dead
Post by: seatalehandro on October 07, 2019, 08:20:17 am
The weirdes thing happen to me yesterday evening.
I have owned my Alhambra (2003, 1.9tdi, 85kW) for 2,5 years now, and ever since I got it the aux heater never worked (the only thing that a friend checked on it was the glow plug which he said was fine).
Yesterday evening, I was leaving my driveway to check out a potential fishing spot when I felt some weird smell inside the car.
I did not pay attention to it and drove to the lake. Now, once I stopped, I got out and noticed heavy smoke coming from under the car.
I took a look and it was coming out the aux heater exhaust.

Now, the second time it switched on later the same day when the car was parked and I just wanted to see if it would work. I could hear some noise from the aux heater, it switched on twice.

The thing is though, one of the metal pipes is covered with diesel, which forms a drip at the end of the aux heater exhaust, hence the smell inside the car.

I am just wondering if it is safe to operate it until I get it to a workshop or if I should disconnect it?
It is not a huge leak but the smell getting inside the car is kind of annoying to be honest.

As for the fuse box, it says the combined air con/heating fuse is No.12, but I cannot seem to locate it (dunno if the fuse box chart is the original one).

I remember having read somewhere that if you press the ECON button on the climate control unit, the car disables the use of the aux heater, is that corrrect?

Basically, safety and the smell are the issue.
Title: Re: Aux heater - back from the dead
Post by: seatalehandro on October 07, 2019, 08:21:50 am
"Now, the second time it switched on later the same day when the car was parked and I just wanted to see if it would work. I could hear some noise from the aux heater, it switched on twice."

Forgot to add here - not only did I hear noise, but it also let out smoke for less than 10 min, having switched on/off 2 times.
Title: Re: Aux heater - back from the dead
Post by: johnnyroper on October 07, 2019, 08:40:24 am
I would disable it if there’s a leak on to the exhaust and it’s producing smoke. While running that smoke is entering the cabin and you are breathing in carbon monoxide.

Can’t remember what fuse it is to disable it but have a look in reference library and I am sure you will find the info there
Title: Re: Aux heater - back from the dead
Post by: seatalehandro on October 07, 2019, 09:00:41 am
Thanks for the reply!
Will try to find the correct fuse, once again.
Title: Re: Aux heater - back from the dead
Post by: Chrispb on October 07, 2019, 10:31:51 am
Fuse 12
Title: Re: Aux heater - back from the dead
Post by: SirDavidAlhambra on October 07, 2019, 08:56:21 pm
I’d love to get my aux heater working but it sounds like one of those features that never works. Sort of like climate control on a Saab. In theory it’s there but in practice forget it. He he
Title: Re: Aux heater - back from the dead
Post by: seatalehandro on October 08, 2019, 11:47:07 am
I’d love to get my aux heater working but it sounds like one of those features that never works. Sort of like climate control on a Saab. In theory it’s there but in practice forget it. He he

Thanks!
I found the same.

Quote
Posted by: SirDavidAlhambra
« on: October 07, 2019, 08:56:21 PM »
Insert Quote

I’d love to get my aux heater working but it sounds like one of those features that never works. Sort of like climate control on a Saab. In theory it’s there but in practice forget it. He he

Well, it just came to me as a surprise, because it started working all of a sudden after being dead for 2,5 years, lol.
Since I cannot access it on my own, I will remove the fuse for now and have my workshop see if maybe the fix to making it work finally is simple...winters can get quite cold here.


I just remembered one thing though, most likely a coincidence...
Some hours before I started the car and teh heater switched on for the first time, I used a vacuum cleaner to remove small leaves from those drainages on each side of windscreen wipers...
I know that the aux heater has a temperature sensore somewhere below the windscreen, right?? Doubt these things are connected though...  ;D ::)
Title: Re: Aux heater - back from the dead
Post by: seatalehandro on October 08, 2019, 11:48:15 am
First quote was meant for ''Fuse 12''
Title: Re: Aux heater - back from the dead
Post by: SirDavidAlhambra on October 19, 2019, 07:13:11 am
A friend of mine said his aux heater was broken until one day he went over a deep pothole and then it started working again.

I’d love to get mine working but can’t help but think it one of those features that basically never works. I don’t even really know how to check if it’s working, the diagnostic software looks really technical and limited. Also some people seem to be saying it fills their cabin with carbon monoxide which isn’t appealing. But the idea of having a nice powerful heater to get the car warm in the mornings is very appealing!
Title: Re: Aux heater - back from the dead
Post by: brianh on October 19, 2019, 10:41:11 am
There are plenty of threads on here about it, the first thing to do is to read the heater for codes and see whats logged, some faults can cause it to lock out, which need the fault fixing that caused the lockout, and then the codes resetting to get it working again. It also only works under certain temperature levels.
Title: Re: Aux heater - back from the dead
Post by: johnnyroper on October 19, 2019, 08:03:31 pm
Once mine was fixed with a glow plug and 2nd hand combustion fan motor mine worked a treat right up until I sold the car. I did however do away with the temp switch and wire a switch in to dash so I could control it and run during summer months aswell.