musicman1488

Hi i have a 2005 530D and the other night i parked it up and next morning when i went to open it nothing happened the car was dead. So i opened it with the key as the battery was completely flat put a booster pack on and tried to start it. It would turn over no problem but not start there was also error messages on the iDrive. i then looked in the luggage compartment and found loads of water in the spare wheel area. I replaced the MPM module and its plug as the terminals were corroded. Now the only fault i am left with is fuel pump fault and when i plugged the car in to read the codes it comes up with Low Rail Pressure On Starting. But i can hear the fuel pump working could it still be the fuel pump or could the water have taken something else out that i have missed.

Any help would be appreciated thanks.

mickeyboy500

Take a look here.

If yours is an E61 then this will tell you how the water got there in the first place, but more importantly how to stop it happening again.

AchtungE60

MPM issue. Common issue on early E60 chassis'