BMW 320D 2007 Lost keys

Quite often people forget to attach the ground cable that goes under a bell housing bolt , check there first.

google search, check images and results

To answer your question, yes it can cause permanent damage. please refer to the below information for more information on what happens during this process. Car Talk How much damage does starting an already running car do

You can't reset the limp home mode, you must take it to the dealer and find out why the computer control is asking for limp to be engaged.

no thats's just a futuristic name given by BMW. otherwise it doesn't mean the pattern that ur suggesting.

Is the Engine Coolant level correct? Number one cause to no heat is low water.

Maybe this guide can help you like a reference guide: Change Air Filter (with pics).

I hope help you (remember rated this help). Good luck.

very easy open house remove old air filter, vacuum out housing and replace with new filter....should take about 5 minutes...

sounds like the key has lost its programming. either the transmitter is damaged from dropping it or it just needs to be reprogrammed at a mazda dealer

replacing the complete lock set with the EWS control unit can be expensive as the control unit will also need to be programed and/or encoded, however if the lost keys cannot be found and you are sure they cannot be used to steel you car you can just order replacement keys from your local bmw dealer. hope this is of some help. You will also nead to disable the lost keys if you order replacements rather than a complete set.