[doughboy]

Originally Posted by Rich Jones

My mirrors heat up independently of anything else.

Defo.

Sat in the car this am at -1, started engine and did nothing.

Within a minute steam is rising from the mirrors and the ice is thinning.

[doughboy]

Originally Posted by NFS

On the original e90 the mirror heaters activated when temps were < 5 deg C and the auto wipers were on.

Are you sure??

I had an 06 E90 and I never had to put on the auto wipers to de-ice the mirrors.

I would never have though of doing that either if the mirrors had not been working.

Maybe yours was built on a Friday afternoon.

[shane55]

Originally Posted by NFS

On the original e90 the mirror heaters activated when temps were < 5 deg C and the auto wipers were on.

Haven't actually checked to see if this is still the case on the LCI.

On the e46 it was (sensibly) linked to the rear window heater.

and also it must be a tuesday and you must be wearing denims!...mine heat always!!!

[a1reader]

Mine heat automatically all the time regardless of any other equipment

[doughboy]

Originally Posted by a1reader

Mine heat automatically all the time regardless of any other equipment

You may be right, but unless its cold / wet you can't see any steam rising...

[raf555]

bit of thread revival, but quick question how can u get the auto function to work on a car that didnt come with it?

is it simple as replacing the headlight switch with one that has it?

or will need coding and all that palava?!

[buckethead]

Originally Posted by raf555

bit of thread revival, but quick question how can u get the auto function to work on a car that didnt come with it?

is it simple as replacing the headlight switch with one that has it?

or will need coding and all that palava?!

your need a new windscreen and the sensor behind the rear view mirror at least