I had a major problem with my BMW E46 3 series. While working on the car with the bonnet open and engine running, the car auto-locked. I contacted BMW and they said put it on a trailer and bring it to us.As if !!. I found the engine control relays and started removing them.The blue one stopped the engine. ( fuel control relay). later I was passing Diamond Lock and asked if he knew how I could get into my car. The owner and assistants all got involved and with explaining what to do and ringing Bunnings to make sure they had the right gear for me, the problem was solved. When I got home it took 5 minutes to open it.I can highly recommend these very professional people.