New owner! Big problems.....

[daytonatrbo]

Originally Posted by Stockx5

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https://xoutpost.com/bmw-sav-forums/...-diy-pics.html

My x5 had multiple components replaced glow plugs no2 sensors etc yet dealer never figured out the thermostat was bad since it did not trigger a check engine light.

That's the real mind blower, right there. How is there not an SES light for failure to reach temperature? It's a standard P code in all OBD2 systems because it directly affect emissions and other parameters.

When I bought my e46 back in 2011, the very first time I took it up to interstate speed I noticed the coolant temp gauge take a dip. Not 30s later the SES light came on and the code pointed to engine temperature.