The coolant light

Asked by Apr 22, 2015 at 08:13 AM about the 2004 BMW 3 Series 330i

Question type: Maintenance & Repair

I have to fill up the radiator everty time before I leave for town.  1 km the coolant light come on - did replace radiator cap [o'rings was not there anymore] No water under the car. cant understand where the water went??  have to fill up 2 litres every time.  Please help ???  thanks. It is a 3.0i

5 Answers

241,605

How many miles, was the expansion tank ever replaced? You will see white powder residue which is where the coolant dried up. If you have over 60K miles, the expansion tank probably needs replacing. Check your hoses and water pump for weeping. The O-ring on the level sensor in the bottom hose sometimes leaks. Also check the radiator. You should do a complete cooling overhaul.

Best Answer
241,605

http://forum.e46fanatics.com/showthread.php?t=914109

1 of 1 people found this helpful.

Thanks do have 178000 km only bought it 10 mths ago. So i cant say if tank was replaced but will have it checked. Thanks a lot !! Is it going to be expensive ?? Regards

241,605

Check the link, if you DIY, buy yourself and install it won't be that bad.

1 of 1 people found this helpful.

Many thanks.

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