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Message: <blockquote data-quote="Alphaville" data-source="post: 726362" data-attributes="member: 44675">First time owner here... so please bear with me.Got myself a 2nd hand 2006 523i UK model, recon in 2010. Salesman told me the key fob batteries are weak, need charging. Both fobs can hardly unlock/lock the car, and only works sometimes when I am standing next to the car. After a few days of charging the fob by using the car, it still has not improved. So I started googling and found the following:1. The rechargeable battery in the fob is the Panasonic VL2020. It is non serviceable, therefore if you want to change, it is a DIY project with replacement battery from ebay.2. It may not be a battery problem, instead the diversity antenna / amplifier could be failing, or the wiring for the antenna is damaged/loose. Other symptoms for this, besides the remote not working, is the radio reception can get bad.I am beginning to suspect I have problem number 2 due to a few clues, so my question is where can I send my car (around PJ) for someone to check out the antenna? Don't dare to DIY, the few pictures I saw is a bit daunting cos it involves opening up the C pillar , etc....Also, if the problem really is the battery, any specialist who can offer their services to have it replaced and reprogrammed?Thanks in advance....</blockquote>