Can't lock/unlock my doors and trunk with the key fob

[hdo]

I am having problem locking and unlocking my car door. I have two keys and both keys are not working. I can open the door manually with the key and I can unlock the passenger door with the central lock push button near the Hand brake. My fuel filler door works fine. I have done some research and I am thinking that it's the GM5 module. What do you guys think the problem is?


Thank you!

 

[hdo]

Just got a reply back from the Scott (BMWGM5.com) gm5 repair guy and he said that it sounds line the remotes are bad.

I don't think the key fobs are the problem, how can both keys failed on the same day. I think there is something with the receiver in the car. Its not picking up the signal from the key fob.

 

[srhutch]

I would have said the GM5 module as well. Mines has played up once, but only when it was really cold. Next time I tried it (not the same day) was fine and has been ever since.

 

[hdo]

Where is the RF receiver located? Is it part of the GM5 module?

 

[Ant]

i've literally just sent my keyfob away to get the battery replaced thinking it was just those dying but the cold weather and it being so intermittent for the unlocking , think it's this myself after coming across it on youtube last night... f**k sake

think the Z4 is heading for a summer sale worst car i've owned for piddly things going wrong with it...i say, on my way out at 8am to try fix the drivers wiper arm

 

[Scooba_Steve]

It's a 13 year old car - I don't think some TLC is unreasonable to expect.

 

[Ant]

It's a 13 year old car - I don't think some TLC is unreasonable to expect.

TLC is fine, resistors burning out , and design flaws like the hood motor, cracking springs etc etc is a different story, none of which are age related.

 

[Scooba_Steve]

In fairness the motor was modified for the facelift (though still flawed and yes, no mod for the pre facelift). The springs are junk but that's not just a Z4 issue - when buying one I'd have budgeted to change them if mine hadn't already come with Eibachs, much the same as I budgeted to 'de-runflat'.
If those are the only issues you've had then fix them and enjoy for the next 10 years :driving:

 

[Bumpy]

When in doubt ..
Re-Boot !

That fixes many intermittent aggravations.

 

[hdo]

I have done more troubleshooting and research. I am leaning more toward the FZV antenna amp. I think it's located inside the rear view mirror. I would like to remove it anfrom see if I can fix it or send it out to get it repair. Does anybody here have any experience removing the FZV amp?