With the ignition on check there is Voltage on one side of the brake light switch with the brake pedal at rest , depress the pedal and there should be voltage at the other terminal . if not bad switch, if ok blown bulbs or bad connection.
SOURCE: method of charging a 2004 Mercedes E320 battery
It is always safer to charge the battery out of circuit, Removal of one cable will insure you can safely charge without hurting electronics on board. Generally if your battery is already sufficiently charged it acts like a capacitor in the circuit and will prevent damage, but many battery chargers do not always put out a pure dc voltage and this can damage electonics.
SOURCE: 99 mercedes e320.check engine light on.po341
that appears to be a camshaft position sensor performance code. you can start by checking to see if the sensor is working properly, re-check and make sure that the harness is ok by checking the resistance through the harness if all looks well there make sure the computer has the latest software on it by having it scanned at your local dealer. also you can check the reluctor wheel on the camshaft for damage or debris in the way of the sensor.
hope this helps!
SOURCE: SRS LIGHT ON E320 MERCEDES 1999
sorry but your going to have to take it to the dealer to get that light reset.
SOURCE: e320 reset SRS
Hi,
Joe here to help,
Without going to a dealer, you need to get a scan tool to reset the srs light. Go to an Autozone store, They will scan it and reset it free of charge.
SOURCE: 2003 Mercedes benz e320 brakes
It is imperative that you loosen the caliper bleed screw BEFORE you push the piston back into the caliper. Failure to do so WILL damage the ABS hydraulics.
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