i have used carman , but still use my e66 whit obdscoop , whit obdscoop you can erase error;s and clear out f,exs check engin light

did send a mail to obdscoop and ask if he was going to make it for maemo but that was no plan for that

but if u have a symbian phone and the obd2 bluetooth adapter
it is a great app if u have a car whit obd2

regards
Just