Coolant Light Problem

subzero330 · 04-14-2009, 09:57 AM

I just replaced the water pump along with a new expansion tank and a new sensor. But the light keeps turning on during a cold start then turns off after the car is all warmed up. The coolant level is all full. I asked some people they said there must be an air pocket in the system causing to turn on. CAN ANYONE SHED SOME LIGHT WITH MY PROBLEM PLEASE!! THANKS!!!

MileHiXi · 04-14-2009, 11:00 AM

First step is to re-bleed the system. You may just be running a little low. As coolant heats up, it expands.

indysingh87 · 04-16-2009, 02:36 PM

I have the same problem, I taken it to the engineer and he told me about how Soft pipes are not good for the circulation! however I drove it a few times before and the pipes seem to be pretty hard when the cars warmed up!

04-14-2009, 09:57 AM	#1
subzero330 Registered User Join Date: May 2008 Location: Virginia Posts: 4 My Ride: 01 330 Ci View My Garage	Coolant Light Problem I just replaced the water pump along with a new expansion tank and a new sensor. But the light keeps turning on during a cold start then turns off after the car is all warmed up. The coolant level is all full. I asked some people they said there must be an air pocket in the system causing to turn on. CAN ANYONE SHED SOME LIGHT WITH MY PROBLEM PLEASE!! THANKS!!!

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04-14-2009, 11:00 AM	#2
MileHiXi Banned Join Date: Mar 2009 Location: Colorado Posts: 884 My Ride: '02 330xi View My Garage	First step is to re-bleed the system. You may just be running a little low. As coolant heats up, it expands.

04-16-2009, 02:36 PM	#3
indysingh87 Registered User Join Date: Jul 2008 Location: London Posts: 11 My Ride: BMW E46 318i View My Garage	I have the same problem, I taken it to the engineer and he told me about how Soft pipes are not good for the circulation! however I drove it a few times before and the pipes seem to be pretty hard when the cars warmed up!