A fault with the headlight control unit or the acc push button module
crappy car
and how to fix it?
Trouble code P2300 means: Ignition Coil "A" Primary Control Circuit Low
To plug in a diagnostic reader on a 2001 SLK 320 Mercedes, you need to locate the OBD-II port, which is typically found under the dashboard on the driver's side. Look for a small, rectangular connector near the steering column, usually just above the pedals. Once you find it, you can connect your diagnostic reader to access the vehicle's diagnostic information.
Trouble code P1516 means: TAC Module Throttle Actuator Position Performance
Trouble code P0432 means: Catalyst Efficiency Fault (Bank 2)
Trouble code P1684 means: The battery has been disconnected within the last 50 starts
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0403 means: EGR Control Solenoid Circuit Malfunction
Trouble code P0507 means:Idle control system RPM higher than expected
P0420 is a Catalytic Converter efficiency failer. More than likely you will need a new Catalytic Converter.
Trouble code P0135 means:O2 sensor heater circuit malfunction (Bank 1 Sensor 1)