2010 (60 plate) BMW X5 Keyfob doesn't work - Please Help!

[Clarky40]

Hi, Can someone give me some advice as to why my keyfob in my 2010 (60 plate) BMW X5 doesn't work properly with both sets of keys? It will occasionally work when you press it many times whilst walking around the car (same with both keys) but this of course isn't ideal. Any advice, thoughts on why and how I best get it fixed would be really appreciated? Many thanks in advance.

[Zebrs]

I had a similar problem on my E91 touring. Neither fobs would work, but central locking would work fine from the button on the dash. This showed it was unlikely to be a fuse problem, and both keys going at the same time means unlikely the battery in each has gone.

I traced the issue to the diversity amplifier (in the spoiler of the E91) which receives the signal from the fob, which had some corrosion on the circuit board. I cleaned it with surgical sprirt (rubbing alcohol/isopropyl alcohol is ideal) and it worked fine. Might be the same problem on your X5.

[Clarky40]

Thank you, great feedback. I'll check this out and hopefully I can sort it out.