E90 Door Locks

[Citroënbender]

Trying to understand what’s going on with a car. Googling doesn’t make much sense yet and I don’t have the time presently to pull it apart and learn from dismantling.

Does the driver’s door handle and key barrel actually have physical (mechanical) connection to the lock mechanism? So if there’s a flat battery you can use the cut blade to open the door? At the moment, that’s not happening.

[russellw]

The short answer should be yes. The general reason for having a key blade and at least one keyed lock is so that there is a method of entry if the vehicle battery / remote / RKE system fails so if that isn't working then either (1) the mechanical linkage is broken and if there aren't two key holes (there may well be one in the tailgate for example) then you are screwed; or (2) the key mechanism is only a trigger for the electronic locking system (in case of remote battery failure) rather than a mechanical connection in which case you are screwed if the vehicle battery goes flat.

Without knowing what an 'E90' is I can't provide any more guidance.

[prktkljokr]

It does supposed to work that way, but E90 and for that fact most of BMW cars suffer from the mechanism failing, the E90 mech is either the same or very similar to most of the BMW range, very common problem with them all after time, to the point they make aftermarket mechs for them ( eBay your mech ), the next weak point is the window mechs and the clips that hold the glass deteriorate, they also make them aftermarket along with repair kits, I have replaced many over the years .