SLK/R170: 2001 SLK 320 Amplifier
I'm pretty sure the AMP will be in the passenger footwell attached to a metal frame behind the carpet next to the gearbox ECU.
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Since then I now have a PO300 code. I had all the spark plugs and wires replaced in the last year. Any suggestions if it turns out to not be just a loose wire? Thanks!


