Coolant level warning light

[drew@dyermaker.cs.uoguelph.ca (drew)]

Pull the coolant sensor control unit from the relay plate - the Bentley
will tell you what position it is (don't have mine handy.)  The overheat
and temp leds will still function, but you will have to check your coolant
regularly like the rest of us to make sure there's still some there.

If that doesn't do it then it's either wiring between relay plate and
instrument cluster or the printed circuit/electronics on the cluster
itself.

Usually what happens is coolant gets forced down the wires by a leaking
sensor and fubars the control unit.

Drew

On Wed, 24 Jul 2002, Larry wrote:

> Okay, all you electro-mechanical geniuses out there, I have a nagging
> problem that I am unable to unravel;
> 
> Several weeks ago, I start it up and, five seconds later, my coolant level
> light starts flashing at me.  I check the coolant level and it is fine.  I
> top it up anyway.  Next time I drive it ('87 16V), the light is off.  The
> following time I drive it, the lights is flashing angrily at me again.  It
> has a pattern:  go to work in the morning, light is flashing the whole way.
> After work, I fire it up and drive home, no flashing light.
>  For two weeks:  Morning: flashes.  Afternoon: not.
>  I replaced the level sensor....no change. Top up coolant again with
> anti-freeze....no change.
>  The *&!!!&%$#?!!#@@! Bentley doesn't even mention the coolant sensor, so I
> have no direction from that quarter.  Nothing on the Scirocco.org tech
> notes....
> I'm about ready to put a jumper on the sensor plug to stop this
> madness....but I like the idea of having an operating coolant level warning.
> Anyone gone through this and have the solution?
> 
> Larry
> 
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Drew MacPherson - '84 Wolfsburg Edition Scirocco TurboDiesel