iTrader: ( 0) E91- Replaced diversity antenna, key still won't work. I have an '09 E91 with Comfort Access. I recently replaced the diversity antenna since both of my key remotes don't unlock/lock the car and radio reception was sub-par. Has been this way since I purchased the car a year ago. I used a replacement antenna from an E70 X5 since it Here's the batteries needed for key fob Neither of the two key fobs will remotely lock or unlock the car. Standard BMW wiring quality . croselli. 3 posts. 57 months I need help with my 320d e91 . I take of the battery of the car BMW E90 E92 E91 E93 How to remove and replace ignition key reader module 316i 318i 320i 325i 328i 330i 335i m3 316d 318d 320d 325d 330dProducts used in the v So to repair no problem just a new housing. The solution is to put the fob in the ignition and drive the car. If it doesn't hold a charge after, then you need to replace the battery; not try to rig some external charging system. The solution is to put the fob in the ignition and drive the car. You can buy a new key shell at turn key to position 1 five times, remove key, hold unlock button then press lock button 3 times, release unlock button. Not that I know of. You shouldn't need to reprogram it though. Unless you have a different fob all you need to do is recharge the battery inside by having it in the ignition and running the car. 3. The remote key fob won't open the doors by pressing any keys on it. I can, however, lock and unlock all of the doors by turning the integrated key inside the driver's door. So the central locking system works fine. It's just the remote that doesn't work. The key fob seems to be working - accordingly to some specialist who tested it with his eC9B.

bmw e91 key battery replacement