Car cranks but won't start
I drove my 05 X5 about 52 miles one day and turned the car off. Once I returned to the car, it would only crank but wouldn't start. I replaced the relay hoping this would work and still nothing. After getting the car towed, I had the fuel filter replaced because this had needed to be done. The car still would only crank and not start. I then took it to a German mechanic shop. He stated he believed it was the car key as he couldn't find anything else wrong. He replaced the car key and still the car only cranks but will not start. After about 2 months in the shop with no luck, I was advised to pick the car up because they could not figure out why it would crank and not start. He states "it seems to be a security issue". Please help!