[Kyronwicker123]

Hey guys so I'm trying to find the passive go module for my 335is.. I can't seem to find it can anyone lead me in the right direction?

My key locks and unlocks when it wants to and all the comfort access features don't work anymore and I've replaced the battery on the key..

[ctuna]

It can be the diversity antenna module or connections.
Many thread's here on the subject if you search.

So you found the L7 amp and battery.

https://www.e90post.com/forums/searc...rchid=68133139

https://www.e90post.com/forums/showt...ersity+antenna

electrical pdf
https://www.google.com/url?sa=t&rct=...,d.cGU&cad=rja
http://www.shrani.si/f/G/fL/2lp3YVG1...hicle-elet.pdf
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

See 2nd electrical pdf for comfort access description.

[Emilime75]

Not likely to be your problem, but I'd consider getting another new fob battery and trying that. I had a similar issue, replaced the battery, no change...pulled my hair out researching and diagnosing...then it dawned on me to go in to my local AutoZone and try the little display they have where you can test your fob. Sure enough, their machine wasn't seeing a signal. Bought new battery, and it all worked again. Anyway, just a thought.

[TunafishE93]

How old is your car battery, it looks to be an H6? If aged i would look at replacing with a H8 battery. The system will turn off CA if it is having trouble with voltage. The H6 is not going to have the consist voltage like a proper H8.

[El_J7]

When i baught my car i kinda had the same problem, where it would sometimes lock and unlock when i was inside the car but never from outside the car. It also would not be able to perform any comfort access features. It happened to be my antenna by the top of the rear window/windshield. Apologies as i dont have any part numbers or actual name of the antenna.

[Emilime75]

^That would be the diversity antenna.

[Soden82]

Mine has been finicky but I believe mine is related to the IBS