As per subject line, the climate control seems to have packed-in on my car.
All the lights and controls behave as normal. The green light on the
snowflake symbol comes on when pressed and the fan/blower kicks in,
suggesting that the system is trying to control the cabin temperature.
However, the air never comes out at anything less than ambient. The heating
function still works.
I must confess that I cannot be sure whether the aircon failure is the
culmination of a gradual reduction in efficiency, or whether it is a sudden
fault. It came to light about three weeks back, when the missus borrowed the
car for a long trip on a very hot day. I had several, increasingly desperate
phone calls from her, asking how to get the aircon working. I ran through
all the adjustments I could think of, but somehow imagined that she must
have failed to follow instructions. When I got the car back, it transpired
that the system was indeed failing to produce cold air, no matter what.
Hoping that low refrigerant level might be the root cause of the problem, I
took the car to Kwik Fit for vacuum removal and replacement. No change (but
no charge either, since I didn't get my =or>10% reduction in air
I have checked fuses 6, 77 and 88 which, according to the fusebox diagram,
are involved in aircon. No problems with these.
So, my question is, where to next? Is there anything else I can easily check
before I resign myself to GBH of the wallet at a garage or aircon
specialist? Incidentally, would people here recommend an aircon specialist
or a BMW dealer?
My suggestion is to visit the local air conditioning shop. Look in the
morning newspaper -- it's kinda like a blog, but you cannot reply, and they
throw it in your driveway or you get one at the donut shop -- for a coupon.
You can raise the hood (bonnet) and _LOOK_ at the air conditioning
compressor to see if it is cycling on and off, but since you had to ask if
you could check this, I'm not sure I could explain where to look.