Quote:
Originally Posted by CrazyOneToo
I have a question. This is the first cold weather I have seen since buying my X5. On my temp gauge it shows about one quarter across. My E46 always runs about straight up in the middle. The X5s heater didn't seem to get very warm either. My ET I believe is going to need replacing but don't have a thermostat yet. I saw coolant around the top of my ET and when I checked the level it showed over filled. Yay for me. 
Question is....do X5s heaters work well normally? I mean it is a roomy vehicle and would take a pretty good heater to heat the whole truck.
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Two things:
- recheck your coolant level (when engine has cooled down)
- UNLOCK your OBC and run TEST 7
If you run TEST 7 while driving around...the 1st screen (of 2 screens) will show the coolant temp (in Celsius)...you should see
KTMP: 076°C (obviously the temp will vary based on actual conditions) in your instrument cluster display.
If memory serves me correct, I believe that the average coolant temp of a warmed engined usually hovers around
108 °C (225 °F)...so if your coolant temp is below this...it may be the reason for your lack of heat.
If I have the incorrect coolant temp for the OP's engine...please feel free to chime in with the correction...my experience has been with the V8 engines (M62/M62TU/N62) for the past 10 years.
