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Model specific boards => Golf mk5 => Topic started by: JoeGTI on 06 January 2009, 11:23

Title: STOP! Check Coolant!
Post by: JoeGTI on 06 January 2009, 11:23
Hi guys
As I was reversing from my driveway this morning my car started beeping loudly at me and a rather worrying message flashed up on the MFD - it was something like "STOP! Check coolant!".

I popped open the bonnet and (bear in mind I know f-all about this type of thing), the coolant level appears to be a little over the MIN mark. Certainly not empty anyway, as the warning message implies. So I continued on my merry way to work   :smiley:

So - I guess I should top it up a little? Stupid question, but what do I ask for in the local Motor Factors? Is there a particular type of coolant I should get?

And - I'm wondering was it just the very cold weather playing tricks with the car's sensors or something?
Title: Re: STOP! Check Coolant!
Post by: 2007GTI on 06 January 2009, 11:40
theres a VW approved grade one, they should know, failing that its in the handbook.
Title: Re: STOP! Check Coolant!
Post by: test_richie on 06 January 2009, 11:50
Go to VW or GSF. It is called G12 i think and should be pink in colour
Title: Re: STOP! Check Coolant!
Post by: test_richie on 06 January 2009, 11:57
this is the stuff

(http://www.amp82.co.uk/tt/timingbelt/g12.jpg)
Title: Re: STOP! Check Coolant!
Post by: JoeGTI on 06 January 2009, 12:08
Thanks lads!
Title: Re: STOP! Check Coolant!
Post by: AlanD on 06 January 2009, 13:47
If it runs out again bare this in mind - http://www.golfgtiforum.co.uk/index.php?topic=100997.msg858238#msg858238
Title: Re: STOP! Check Coolant!
Post by: ub7rm on 06 January 2009, 13:52
A common problem with mk4's was that in cold weather the STOP coolant warning would come be flashed up though the actual coolant level was OK.  The fix was to replace the tank and sensor if you couldn't live with it but this was cheap to do.  I'd say keep an eye on your actual coolant level for a while, if its pretty steady then it will just be the sensor.
Title: Re: STOP! Check Coolant!
Post by: R32UK on 06 January 2009, 14:21
I had this a few months back and just plopped a bit of water in.... job done :grin:
Title: Re: STOP! Check Coolant!
Post by: No Golf Clubs at all on 06 January 2009, 14:41
I would have shoved water in too !  :grin:
Title: Re: STOP! Check Coolant!
Post by: R32UK on 06 January 2009, 15:29
.... and why not :grin:

Actually the dealer said they had conducted a full check of the car and everything was in fantastic order, and that I obviously looked after the car very well. Gets my vote :wink:
Title: Re: STOP! Check Coolant!
Post by: JoeGTI on 06 January 2009, 16:00
Would pouring water in not be a bad idea in these freezing temperatures? I guess the key is not to dilute the coolant too much, right?
Title: Re: STOP! Check Coolant!
Post by: bacillus on 06 January 2009, 16:08
When just topping up I use neat G12.
Title: Re: STOP! Check Coolant!
Post by: R32UK on 06 January 2009, 16:09
Would pouring water in not be a bad idea in these freezing temperatures? I guess the key is not to dilute the coolant too much, right?

Adding a bit of water is not really going to do too much harm. Just dont expect to get away with it more than once, like you said its these freezing temperatures that you do need the coolant in there to stop it freezing over :smiley:
Title: Re: STOP! Check Coolant!
Post by: BodyThief on 06 January 2009, 18:56
I had exactly the same problem this morning. I kept an eye on the temperature gauge which was normal on my journey to work. The warrning signal had gone when I drove back home.

Title: Re: STOP! Check Coolant!
Post by: JoeGTI on 06 January 2009, 21:42
I had exactly the same problem this morning. I kept an eye on the temperature gauge which was normal on my journey to work. The warrning signal had gone when I drove back home.


Exact same for me. It was fine driving home this evening, temp gauge fine too. I reckon the absolute brass-monkey weather must have caused it. I'll investigate more closely at the weekend when its less cold / dark  :grin:
Title: Re: STOP! Check Coolant!
Post by: JoeGTI on 07 January 2009, 09:55
Hi again guys,
I got exactly the same warning again this morning, so this time I topped it up with a tiny bit of water. Hopefully that'll be the end of it.

However, while my head was under the bonnet I said I'd check the oil. When I opened up the oil filler cap, I noticed a kind of a creamy residue / scum, yellowish in colour (a bit like fresh oil I suppose) on the inside of the filler cap and just around the top of the hole. I've read before that "milky" residue is very very bad! But this doesn't look "milky" to me if you know what I mean.

Actually - I just found this - http://www.golfgtiforum.co.uk/index.php?topic=72294.0

That sounds just like what I saw - I'm hoping its nothing more serious   :shocked:
Title: Re: STOP! Check Coolant!
Post by: Merlinman on 07 January 2009, 10:35
'Drive it like you stole it' will stop that jism  :laugh:
Title: Re: STOP! Check Coolant!
Post by: test_richie on 07 January 2009, 11:04
It is like Komenda said in the thread you posted. If you only did a short trip last time you drove the car, that will be the most likely cause.

You only need to worry if you start to get alot of it as it could mean your head gasket is gone and letting water in.
Having said that, that could be why the coolant level has gone down.

I would as Merlinman has said above take it for a long drive like you stole it. and see what you have under the cap after that.
Title: Re: STOP! Check Coolant!
Post by: JoeGTI on 07 January 2009, 11:44
Thanks guys. Yeah my drive to work is very short - less than 10 minutes! And it was extremely cold this morning too.
Title: Re: STOP! Check Coolant!
Post by: Wh|t3R@bb|t on 07 January 2009, 12:21
I got the Coolant message yesterday and this morning, but I let my car warm up for a few minutes before I drive it and then I restart the car and it doesn't appear.  It only ever happens in really really cold weather....only seen it about 3 times in 7 months.  However, on checking the level it does seem to be fine?  So must be as someone said, be the sensor or the tank.