Low coolant level warning
2011 Vauxhall Insignia DM11

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James
Driver
1 points

Problem added: May 15, 2021 (4 weeks ago)
Just got new timing belt and water pump fitted to my Vauxhall Insigna Exclusive158CDTI .
When driving home from garage I got a warning - coolant level low -top up. On inspection of the expansion tank I could barely see a drop in the recommended coolant level. It is only three days since the timing belt/water pump was fitted and now every time I take a drive the coolant warning appears - what could cause this to happen

Car details
Car: Vauxhall Insignia
Variant: DM11
Model Year: 2011
Category: Leaks & Noises
Replies and Fixes
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whittingehame
Legend
19,216 points

May 15, 2021 (4 weeks ago)
If it's not losing coolant , may be faulty sensor . Could check coolant level first thing in morning when cold before starting the car and top up if needed and see how it goes .
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James
Driver
1 points

May 16, 2021 (4 weeks ago)
Thanks whittingehame,
Checked as you suggested and noted slight coolant lost. About 3ml coolant needed to Top up. Will be taking a short run this afternoon and will let you know how it goes !
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James
Driver
1 points

May 16, 2021 (4 weeks ago)
Took car for run .Low coolant warning appeared again after travelling 4 miles.
Temp gauge showed normal. Could not find any signs of leak.
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whittingehame
Legend
19,216 points

May 16, 2021 (4 weeks ago)
Take it back to garage for checking . They can pressure test the cooling system if needed and that should show any leak
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James
Driver
1 points

May 16, 2021 (4 weeks ago)
Many thanks for your help. Will do that tomorrow.
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whittingehame
Legend
19,216 points

May 16, 2021 (4 weeks ago)
Be grateful if you could update the forum on the outcome .
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