Stange Fault Need Help Please

[jamesey]

hi after all my new rad work , ive got a hot coolant light on my dash from start up not when the engine is warm its there all the time and beeps 3 times to say theres a fault , ive plugged my code reader (orange one off fleebay) and the codes 18080 , ive got vag-com on my laptop and thats saying 01189 front air distrubution flap motor ,whats that,is it the bosch little pump behind the coolant fill up bottle? , i cant here it running now and i did last week , usually when i turn the ign on and off again it kicks in , all its doing now is i can here a relay click the the 2 front rad rand kick up for a split 2nd , does your gal do that? ive got to get it back on the rd next sat so im just stumped at the mo , thanks

[jamesey]

any ideas , im not going to the steelers to find out :(

[pearly king of surbiton]

if the engine is cold and a hot coolant light comes on, then the fault may be the temperature sender gauge.

on my understanding, all temperature senders are essentailly bi-metallic strips of fixed life.

the other possibility is that the engine really is running hot, which would suggest the thermostat not opening.

both these parts are cheap.

might i suggest clearing the fault codes after the car is back on the road and all the wiring and components back in palce to avoid false positives in the fault code system

hope this helps

john

[chrispb123456]

hi after all my new rad work , ive got a hot coolant light on my dash from start up not when the engine is warm its there all the time and beeps 3 times to say theres a fault , ive plugged my code reader (orange one off fleebay) and the codes 18080 , ive got vag-com on my laptop and thats saying 01189 front air distrubution flap motor ,whats that,is it the bosch little pump behind the coolant fill up bottle? , i cant here it running now and i did last week , usually when i turn the ign on and off again it kicks in , all its doing now is i can here a relay click the the 2 front rad rand kick up for a split 2nd , does your gal do that? ive got to get it back on the rd next sat so im just stumped at the mo , thanks

The coolant overheat light also doubles as a low coolant level light.

If it stays on constantly and not flashing, check the connections on the coolant bottle, you will need to remove battery to do this.

[MadBaz]

That little bosch thing is the coolant run on pump, should work on yours whilst engine running and for a few minutes after switching ign off. If it's not working your booster won't work properly, and you may suffer hot spots in the engine. It works of the rad fan relay.

[jamesey]

i think the 18080 fault is the fan motor relay circuit is it not with the orange scan thingy ive got , when i turn the ign on i can usually hear the bocsh pump kick up for a few seconds then goes off , now i cant hear it at all , plus i found the exp plug loose and it had run coolant onto the plug not goo , all dry now and the fault has gone , but this bosch pump not running worries me , looks an easy job but how can i test this?

[chrispb123456]

Pump is easy to test, just remove multi plug and supply battery voltage to it, or you could just try tapping or prodding it, when they first start to pack up there a bit intermittent and will usually run for a short time after being tapped with a long screwdriver.

[jamesey]

where would i find the control relay and things to check , its only happened since i took the top hose of my rad off , the code 18080 means fan control circuit fault/short , down to earth , its strange it should do this fault when ive got things wet from draining the top hose

i believe the run on pump comes from the feed for the fan control circuit.

[jamesey]

hello ,where would i find the control relay and things to check