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X166 Mercedes-Benz GL-Class Ignition Switch Repair

LA Car Tech

X166 Mercedes-Benz GL-Class Ignition Switch Repair


Symptoms of the common issues of Mercedes-Benz vehicles, which this service will repair:

  • Key does not turn in the ignition due to failed EIS
  • Key doesn’t turn during cold weather
  • Key may turn, but the instrument cluster lights don’t turn on
  • Unable To Turn The Key, Unable To Start The Car
  • Can turn the key but car won’t start
  • Mercedes key intermittently works
  • Push start button no longer works

What you need to do:
Remove the Ignition switch (this tasks requires special skills and tools!!!) and send it to us:
LA Car Tech
1 Compadre Circle
Laguna Niguel CA 92677

Mercedes-Benz ignition switch (often referred as immobilizer module) can become faulty and in some cases due to user error. For example, some common reasons why the ignition module failed are:

  • Low battery voltage
  • Power surge due
  • Connecting jump starting cables while key is in the ignition.

During any of the above scenarios, the EIS-EZS may lose its memory. While it can be diagnosed with Start Diagnostic Scanner used at dealerships, it can’t be repaired with this scanner. Mercedes dealers don’t repairer a bad EIS-EZS module. They will recommend that the module be replaced. That’s not necessarily the only solution, see alternatives below.

We will repair your issue and mail out the ignition switch within 48-72 hours of receiving your
1) Ignition switch,
2) Existing keys for the ignition switch.


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