Xoutpost.com - Thermostat

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It sounds like you had your X in for something else and indy mentioned thermostat or did you have symptoms that tied to cooling system?

Since you are only driving short distances it should not harm the engine and it is possible it does not get to proper operating temperature with good or bad thermostat anyway. Regardless, it is not something that has to be done right away.

I would think if the indy wanted to scam you they would have chosen to repair that costs a lot more and requires many hours of labor. If you are concerned about integrity of shop either unlock the OBC and monitor temperature or ask the shop to do so. Then let the engine idle for 15 minutes to monitor temperature before making a decision to replace the thermostat. If indy is trying to put one over on you it will do no good to ask him how he knows it is a bad thermostat. I would either monitor the coolant temp or get a second opinion and prices from to do the repair.

Code or no code, light or no light you will have your answer.

Quote:

Originally Posted by g300d (Post 988834)

Haha yeah, I meant thermostat though, sorry. :)

A lot of people replace the water pump when they do a cooling system overhaul. I did get a waterpump with the intention to replace it along with the hoses but with a few anecdotes on line indicating these are relatively long-lived, plus it being relatively accessible, I held off for now. I've read reports of these OE water pumps reaching beyond 100,000 miles, so at 45,000 now, I'm (hopefully) still a ways off. :)

lol Okay thanks :)

It will trip p0125 generic: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL. in the winter. This will turn on SES.

Under the bmw hidden codes, you will have open thermostat.

Maybe I am paranoid but I believe on my car, this has greatly affected adaptations due to me taking 5 mo. To fix it (busy).

Quote:

Originally Posted by Persian (Post 988874)

Exactly. Happened to me in winter too. It is a general P code. I am telling you it was the first ever code I read off the car, with SES on. And like I said before, maybe because it is a 4.8is and we have a sensor right on the tstat, but it sets off the SES.

Oh and my friend has a 3.0, had the same error during the polar vortex, it has not returned. Persian has a 3.0 as well. The winter condition is news to me.

The X5 was in for an OIL service and to check that the shop that replaced the Steering Angle Sensor had coded the repair properly...they found a "problem" with the t stat and also the brake light switch(?) that they said was causing my adaptive headlight problem...(they used to move slightly right and left as you turned the wheel, which they no longer do)....I am loosing faith in this new shop as well as the shop that I used for over 20 years...the one that replaced the SAS and told me that they had done the oil change when in fact they had NOT done it...(oil was dirty and 1/2 quart low the day after they serviced it)....
Makes me want to start leasing new cars and not having any "REPAIR SHOP PROBLEMS"
tnx Daniel

Someone here has a list of recommended shops around the U.S. That might be helpful.
If I have something I can't do I always check with the local BMW club for what shop is currently on the good list. If there is a cars and coffee in your area that would also be a good place to talk to BMW owners.