santas_little_helper

m50 takes 6.5 l . not sure about aftermarket sumps though .

Sounds to me like you need a new expansion tank .

sorry my bad . yes it is possible to do if you change the software in the ccc , but it has risks : modifing software may result in faults in other control units . it may even disable some systems , leading to a nasty repair bill ( i have seen it on a number of occasions ) . also , try getting a garuntee that no control units will crash as a result of the modified software . there is one other issue , if at some stage you vehicle requires a control unit to be replaced , the vehicle will have to be programed , thus reverting the vehicle back to its origional vehicle order ( radio goes back to jap spec ) . i am refering to the bmw dealer network . a fair amount of after market " software changes " end up back at the dealer for repairs $$$$ . so , yes it can be done , but beware of the possible dangers . a band expander is the most risk free way to get your radio working .

Or have the antenna amplifier coded .

No mate , not a world radio . will require a band expander .

E46 year model Dec 03 to July 04 had an issue with the front door lock assemblies . You have 3 options . Live with it , have the door locks replaced or have the conveniece opening feture coded out by a dealer .