Q7 MK 1 Discussion Discussion forum for the Audi Q7 SUV built from 2005 to 2015

Coolant light coming on

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Old 10-01-2018, 02:36 PM
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Default Coolant light coming on

My coolant light keeps coming on, coolant is ok after driving for about 30km the light disappears and the temperature gage is still ok.
What should I do?
Old 10-01-2018, 03:50 PM
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Consider adding some coolant.
Old 10-02-2018, 07:13 AM
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First of all, make sure your coolant level is topped off. If that is not the issue, then I believe it is a failing coolant tank sensor. My '07 does this as well...not because of a low coolant level. It would require replacement of the coolant overflow tank since the sensor can not be replaced separately. Doesn't really bother me since the warning is intermittent and I know what the cause is...but I guess I'll swap it out one of these days when I flush the coolant.
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