BMW Questions? Ask a BMW Repair Expert for Answers.
yesterday a yellow and a few seconds later a red thermostat warning light came on while i was on the interstate, i start losing some power while getting off the exit but a few seconds later it picked back up power. I let my car cool down for 45 mins and checked the coolant, i added about 25% to 30% of the coolant so my coolant was not completely low. I started my engine back up again and the lights did not come back on and i was able to travel on the interstate another 200 miles. What are some of the possible issues? i am nervous about getting back on the road because i have about 300 miles to travel back home.
Hello, I'm Jason. I will do my best to answer your question quickly and accurately using the information you have provided.
by far, the most common cause of this problem is a failed water pump
if this is the case and you keep driving, you will likely cause major damage to your engine
I'm sure this isn't the answer you were hoping for, but I'm trying to do my best to keep you from causing further issues
I can offer you a quick test that you can do yourself to see if the water pump functions
here's how you can check water pump function
open coolant cap and check to see if coolant is circulating
if it's not, the pump needs to be replaced
how much it cost to replace a water pump for my vehicle
since my car is a BMW is it okay to get something like the water pump replaced at a place like Pep Boys etc or this is something that needs to be done by the dealer?
okay i just followed the steps above and nothing happen...meaning the heater did not come on at all unless i start the engine....please help...maybe im doing somehting wrong.
i inserted the key into the ignition and only the radio came on?
also will the themorstat light come back on if my car is overheating again? im about to try the steps above again
i have followed your procedures and nothing is happening, do i need to start the engine in order to follow the process above and then cut the engine off otherwise...i have a 2006 BMW Xi with a push key and start button
the dash lights are not coming on when i follow the procedures above, only the radio comes on. the dash lights and heater/AC only come on after i start the car?
okay will try that
okay i am now waiting the 12 minutes but i noticed that the fan has not come on yet or does it suppose to come on with this process?
okay here is what i saw after clarification from the steps above:
-i took the cap off
-i performed the procedures as indicated above
-i saw where small stream of antifreeze was flowing into the tank and occasionally a stream of antifreeze etc., would also stream out from the dip stick....this went on for about 12 minutes and afters it stoped
-i noticed a very low humming noise when the above was taking place but it was very low
when you say coolant flowing i am assuming you are talking about your last comment above and my observations in step 3 above.
i am not sure how loud the humming is suppose to be (like a fan etc.,) but i did here humming but again it was extremly hard to hear but i did hear it and i am not in a quiete location