Abs light on, high idle

Hi I just bought 1989 560sel. Battery was dead and I decided to use booster. Unfortunately (idiot) I mixed polarity. I melt some wire isolation because I saw a smoke. I disconnected immediately. Check wires and only some isolation was melted. Got a new battery and it started. And now I have an issue with abs light constantly on and high (2000rpm) idle. Also cold start takes lots of cranking Any suggestions? Thx

Hi
I just bought 1989 560sel. Battery was dead and I decided to use booster. Unfortunately (idiot) I mixed polarity. I melt some wire isolation because I saw a smoke. I disconnected immediately. Check wires and only some isolation was melted. Got a new battery and it started. And now I have an issue with abs light constantly on and high (2000rpm) idle. Also cold start takes lots of cranking
Any suggestions?
Thx

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