Understanding Mercedes ‘Limp Home Mode’

Understanding Mercedes ‘Limp Home Mode’


Many Mercedes models come equipped with an engine control that limits the power to prevent damage to the engine when something goes wrong. Commonly called ‘Limp Home Mode,’ it allows you to continue driving at reduced power and speed to get home, instead of breaking down on the side of the road.

While we’re all thankful to be able to make it home when something goes wrong with our Mercedes, you want your vehicle out of limp mode as soon as possible so you can get back to benefitting from all of the power and refinement a Mercedes-Benz delivers.

We have put together this guide to help you diagnose common issues that can put your Mercedes into limp home mode.

Causes of Limp Home Mode in Your Mercedes

Limp home mode comes on when your engine isn’t running properly, and there is risk of further damage. There are many conditions and causes that can set your Mercedes into limp home mode. Watch for things like:

  • A faulty mass air sensor (MAS)
  • Electronic throttle actuator problems
  • EGR and exhaust fuel issues
  • Broken, cracked or loose wiring harnesses
  • A damaged brake light sensor
  • Corroded computer module contacts
  • Problems with the transmission neutral safety switch

It’s easy to see that there are many different issues that can occur on your engine, engine control systems and transmission controls that can tell your Mercedes to go into limp home mode. While some of these problems may not be major, others can lead to further damage if you continue driving and often indicate other major problems that need to be addressed.

Getting Your Mercedes out of Limp Home Mode

As soon as you detect your Mercedes has gone into limp home mode, find a safe place to pull over and shut off your engine. Try starting it again and see if it stays in limp home mode. In some cases, a problematic condition can temporarily clear itself by restarting the car.

In all cases, it’s important to get your vehicle to a qualified Mercedes shop like Burdi Motorworks for diagnosis and repair. Even a temporary limp home mode situation can indicate a larger problem, so let our experienced team diagnose your underhood issues and get your car running reliably again.

You drive a Mercedes Benz product because you want the best in performance, luxury, power, reliability and comfort, so let our team help you keep it in top condition. We have been serving customers in the Chicago area since 1991 and have the knowledge and experience necessary to find out why your Mercedes has gone into limp home mode and fix the problem for good. Contact us today to discuss your issues and to schedule a service appointment.
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