fulburncams

Apologies if this has been requested many times before but I have just bought 2009 318D ( E90 i think) touring.  All seems well but the key fob does not always open the car,  i can use the manual key and everything starts / runs fine but obviously I do not want to keep having the alarm go off when i want to drive.  So far I have replaced the battery in one of the fobs,  but whilst this initially seemed to work , but today it has again not let me in, so I am guessing i have a problem with the car rather that the fob.  Sometimes i see a battery symbol on the dash,  does this imply the main battery is old and needs replacing.  Also , possibly unrelated,  i cannot get into the boot sometimes ,  any help/advise much appreciated.  Thanks  Steve

Thanks, I will try and post in correct place next time.  

Apologies if this has been requested many times before but I have just bought 2009 318D ( E90 i think) touring.  All seems well but the key fob does not always open the car,  i can use the manual key and everything starts / runs fine but obviously I do not want to keep having the alarm go off when i want to drive.  So far I have replaced the battery in one of the fobs,  but whilst this initially seemed to work , but today it has again not let me in, so I am guessing i have a problem with the car rather that the fob.  Sometimes i see a battery symbol on the dash,  does this imply the main battery is old and needs replacing.  Also , possibly unrelated,  i cannot get into the boot sometimes ,  any help/advise much appreciated.  Thanks  Steve