My car is an 06 and was struggling to get the temperature down really low as well as making some odd noises. I just had a recharge done by Kwik Fit at £49 and it transformed my air conditioning.

For what it's worth, I had exactly the same problem with my old E39 5 Series. I had the ABS sensor(s) replaced and still not resolved. Turned out to be the ABS ECU. I had that refurbed (£100) and all well afterwards. Good luck.

I have just bought a 2006 E53 X5 that doesn't have a multichanger fitted.

Can anyone tell me if it is a simple case of puchasing a multichanger (ebay? )and connecting it up, or is there anything more complex in fitting one of these?

Any advice greatly appreciated.

Thanks