Need some input from fellow Bimmerian

[Astronyu]

Hi guys, I have several questions that I hope somebody might be able to shed some light.1. My ride seems to have trapped water inside left passenger door. Is this normal? What might have causing it? Last time brought to wshop and mech just put the car on a slope and open the door so the water gets out. Very annoying as whenever there is heavy rain, my car becomes smart tunnel..haha..2. My rear window seal rubber together with other windows seems to be cracked and the lower part of the rubber of rear windows spliced. Any idea of where can I get replacement? Planning to replace all seals.3. My car often shows transmission fault even after changing ATF fluid. any chance this might cause of the low battery? Which battery is best for our UDM?Thanks for your help.

 

[harry_7]

3. Transmission fault during driving or static? Use Ron95 petrol?

 

[Astronyu]

During driving and yes I normally use ron95.

 

[harry_7]

Last time it was happen to my E60 too, when use Ron95, the transmission always pop up error when you are driving down hill, or when overtaking the car, just press harder the pedal the error appear. Need to stop aside, turn off engine, then restart and all back to normal. After I change to Ron97, it happen once only then days after no more error pop up. It work smooth until now...I also suspect valve body issue, but so far no error and let it be....

 

[shiva73]

The connection between petrol and gearbox maybe sounds not logic- but ho harm to try on couple of full tank RON 97 before u touch something else.