BMW 3 Series Forum - Technical Talk on the BMW E46
the car is a 2001 model e46 318i.
when i bought the car only one key remote was working.
the spare key remote was not working.
i cut the key fob and looked at the rechargeable 3v battery- on testing it,it read only 2.75volts.
Also the little switch on the electronic chip that is actuated...