2012 Mercedes-Benz P0507: What It Means & Is It Safe to Drive?
P0507 on the 2012 Mercedes-Benz: Idle Air Control System RPM Higher Than Expected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
PowertrainLow urgency
What this code means
Idle speed is higher than the PCM expects. Often caused by a vacuum leak or dirty IAC valve.
Common causes on the 2012 Mercedes-Benz
- Vacuum leak
- Dirty or faulty idle air control valve
- Throttle body carbon buildup
Symptoms
- High idle
- Check Engine Light
- Possible surging
Typical fixes
- Find and fix vacuum leaks
- Clean or replace IAC valve
- Clean throttle body
Repair cost range
For a 2012 Mercedes-Benz, repairs for P0507 typically fall between $50 and $400, depending on the root cause and labor rates in your area.
Known issues on Mercedes-Benz
Mercedes P0507 on M272 and M273 engines often traces to a dirty throttle actuator or a failed intake manifold swirl flap actuator causing unmetered air at idle. Clean the throttle body and perform a Mercedes idle adaptation reset via STAR diagnostic tool or an aftermarket equivalent.
Most commonly affected models
ML350 2012–2015E350 2010–2014GLK350 2010–2012