John77
Senior Member
- Joined
- Nov 19, 2018
- Messages
- 789
- Reaction score
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- Your Mercedes
- E200 Estate 2011, 2009 SLK 200
I have an ICarsoft reader which I have used many times. It says in the instructions that you need to have the ignition turned on or the engine running. Why is this. I do always use it with the ignition on, but it will start up and read without it being on. Does the ignition have to be on to read certain things that need waking up?
