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I had the same exact car with same exact problem. I changed the thermostat once and it fixed it for about a year. The issue came back and I changed again and it fixed it again... So I'd say get an OEM one if you can.
our 2009 CRV was taking a long time to get to operating temperature and then fluctuating a lot while driving. a new thermostat fixed it.
Don\u2019t listen to these people I have an 08 ex Sam problem replaced thermostat 2 weeks ago in 15 minutes problem is gone
The gasket looks fine. Normal procedure would be to buy a new one from BMW. always go OEM with the thermostat, there's a lot of shit knockoffs.
I recently moved on from a 2016 X3 35i (N55) with a little over 100k miles on it. The only things to break on it were the thermostat and a control board for one of the headlight modules. When I replaced the thermostat I did the water pump as a precaution.
My 535i with the 740d thermostat sits at 90-95 during normal use, even sat stable at 95c during 40c weather in traffic. When beating on it in the mountains got it up to 99 at like 28c ambient.
Notice the radiator is leaking. Replace that. Car still not happy, cooling fans on full blast. Codes point to a thermostat, but the radiator hoses get warm. In my pea brain thermostats don't normally just sometimes go bad, they're typically either all broke or not broke. Ordered a thermostat from Trumplandia anyways.
I bought from FCP euro one of the OE water thermostat and water pump. The thermostat sticks open since new so I get check engine light on my M54 engine.
I have had brand new bmw thermostats not work and cause my car to get hot on the highway.
I bought a 2022 X4 about a month ago from BMW. Had it for 2 weeks and got the same notification. Took it to BMW ( I got the warranty) and adjuster came in from the warranty people on Monday but haven’t approved the repair yet. They said it was also a thermostat. Seems like this is a common thing in these cars ? Mine is at 61k miles, bought it used and only had it for 2 MF weeks.
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If choosing thermostat across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
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In March 2026 on PartReview, thermostat OEM Honda were overall better than OEM BMW.
Thermostat OEM BMW and OEM Honda were equally popular according to data in March 2026.
By vote balance, thermostat OEM Honda surpassed OEM BMW:
By number of reviews, thermostat OEM BMW surpassed OEM Honda:
In March 2026, according to PartReview, thermostat OEM Honda led more car-specific ratings than OEM BMW:
OEM Honda are chosen by owners of cars such as: Honda Civic, and others.
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For example, comparisons of thermostat OEM BMW with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM Nissan, OEM Audi.
Also available: comparisons of thermostat OEM Honda with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM Nissan, OEM Audi.
You can also see who is better among other thermostat manufacturers: Wahler or MotoRad, OEM Volkswagen or MotoRad, Mahle or MotoRad, OEM Mazda or MotoRad, MOPAR or MotoRad.