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      10-28-2012, 12:45 PM   #31
HighlandPete
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Quote:
Originally Posted by Dandle View Post
That's what I saw. I think that's only for cars with 4zone heating. Its available on petrol cars too and I think the electric heating elements are for trimming the heating when you have four seperate zones commanding different temperatures.

I would be supprised if the dervs do have PTC elements as they warm up so quick now. They were removed off the later E60s and these warm up faster than those.
Why do you come to that conclusion? BMW have indicated the PTC is there for heating the diesel engine models, due to engine efficiency and therefore not fast enough cabin heating.

For example F20 1-series and 3-series F30 diesels have them, and they don't have a 4-zone system.

http://www.realoem.com/bmw/showparts...77&hg=64&fg=40

http://www.realoem.com/bmw/showparts...77&hg=64&fg=40

HighlandPete
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