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Model specific boards => Golf mk6 => Topic started by: eug2huge on 19 February 2016, 09:47

Title: Temperature warning light on start up
Post by: eug2huge on 19 February 2016, 09:47
Hi guys,

A few times this winter when I start my gti up in the morning the temperature warning light come on and there is an audible beep!

Seems to only happen when it's below freezing. I have checked the coolant level (which is fine) and made sure the cap is tightened correctly.

If I re-start the car the light goes out. When I continuing to drive the temperature reaches the normal level and there are no further issues.

I am guessing this is a sensor issue? Has anyone had this? I have a diagnostics dongle and have checked for errors but none come up.

Very queer...  :smiley:
Title: Re: Temperature warning light on start up
Post by: Rgdogg on 19 February 2016, 10:20
It does it on my golf, I think it's when the temp is 4 degrees or below, just to let you know that road and weather conditions may be slippy.
Title: Re: Temperature warning light on start up
Post by: eug2huge on 19 February 2016, 10:43
Thanks, does yours go out if you continue? mine doesn't which seems disconcerting..
Title: Re: Temperature warning light on start up
Post by: jv on 19 February 2016, 11:13
Must still be cold outside then  :tongue:
Title: Re: Temperature warning light on start up
Post by: eug2huge on 19 February 2016, 11:17
Had the car for over 3 years and has only started this winter..

Still finding it a little queer...  :undecided:
Title: Re: Temperature warning light on start up
Post by: SunnyGTI on 19 February 2016, 11:25
I have had it only come on recently, but I think that is because the guy with VCDS/Vagcom turned on this temp for me..!
Title: Re: Temperature warning light on start up
Post by: gaurav_aidasani on 20 February 2016, 20:20
On my car everytine the outside temperature drops below 4 degrees it gives a beep. Just a warning that the roads might be icy, nothing more.
Title: Re: Temperature warning light on start up
Post by: joe6 on 21 February 2016, 17:44
Mine gives a beep below 4 degrees and the temp in the MFD flashes for a few seconds.
Title: Re: Temperature warning light on start up
Post by: itavaltalainen on 21 February 2016, 20:40
Which temperature warning light are you talking about?

Red coolant temperature light or the snow flake symbol?

If you have VCDS then check measuring blocks and see if outside temperature, all coolant temperatures etc are all plausible.
Title: Re: Temperature warning light on start up
Post by: eug2huge on 22 February 2016, 12:44
It's the red light that comes on and stays on (only when freezing or below).

Don't have VCDS unfortunately but have checked with my dongle/app. No errors showing..
Title: Re: Temperature warning light on start up
Post by: itavaltalainen on 22 February 2016, 16:09
Try cleaning the electrodes in the expansion tank.
No faults does not mean nothing is wrong - OBD2 dongles are rubbish at properly diagnosing faults.
Title: Re: Temperature warning light on start up
Post by: eug2huge on 22 February 2016, 16:43
Yeah, I though as much.

Will give it a clean at the weekend.
Title: Re: Temperature warning light on start up
Post by: AntGTD on 22 February 2016, 19:58
Had this on several MK5s - replaced the expansion tank and the alarm was no more. Its about £25 and takes 10-15 minutes but must be done when the coolant is stone cold.
Title: Re: Temperature warning light on start up
Post by: ub7rm on 25 February 2016, 23:33
Golfs (and other VAG's) have been doing this since at least the mk4 era - fix is to ignore or replace the coolant tank cw sensor.
Title: Re: Temperature warning light on start up
Post by: eug2huge on 26 February 2016, 12:33
Many thanks. Don't suppose anyone has the MK6 part number please?
Title: Re: Temperature warning light on start up
Post by: seabrook132 on 26 February 2016, 17:14
Here you go mate, not entirely sure how the pricing works (whats that +18% all about?) but here's the number:

(https://farm2.staticflickr.com/1526/25250962326_b153609048_h.jpg)
(https://farm2.staticflickr.com/1707/25250962246_7ea2c66ed8_h.jpg)
(https://farm2.staticflickr.com/1641/24650435893_d4a30b4428_h.jpg)
Title: Re: Temperature warning light on start up
Post by: mike. on 27 February 2016, 09:15
Here you go mate, not entirely sure how the pricing works (whats that +18% all about?) but here's the number:

The 18% is just the country's VAT rate.

You need to go to "maintenance/settings" and change the options under country Settings, like below.

(http://www.thewindinglane.co.uk/images/mk6gti/misc/etka1.jpg)
Title: Re: Temperature warning light on start up
Post by: seabrook132 on 27 February 2016, 09:48
Here you go mate, not entirely sure how the pricing works (whats that +18% all about?) but here's the number:

The 18% is just the country's VAT rate.

You need to go to "maintenance/settings" and change the options under country Settings, like below.

(http://www.thewindinglane.co.uk/images/mk6gti/misc/etka1.jpg)

Awesome, thanks for your help mate!
Title: Re: Temperature warning light on start up
Post by: eug2huge on 04 March 2016, 14:40
Replaced the tank at lunch. Guess I'll know if it's solved the problem tomorrow morning when it cold!

Of course I dropped one of the screws down a plastic channel..

don't drop the screw, don't drop the screw, doh!!

Will have to fish it out with a magnetic pickup later.