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A0005458916 / 5WP20124AM Mercedes-Benz Electronic Ignition Control Module.
The A0005458916 / 5WP20124AM is an Electronic Ignition Switch (EIS) / Steering Lock Control Module used in various Mercedes-Benz models. This component is a key part of the vehicle’s Drive Authorization System, controlling ignition, steering lock release, and communication with the vehicle’s ECU to permit engine start.
OEM Part Numbers:
Mercedes-Benz: A0005458916
Siemens VDO: 5WP20124AM
Function: Electronic Ignition Switch (EIS) / Steering Lock Module
Role: Authenticates the key, releases steering lock, enables start sequence
Common Symptoms of Failure: No crank, key not recognized, steering lock not releasing
This EIS module is used in several Mercedes-Benz models, mostly from the early-to-mid 2000s:
Make | Model | Chassis | Years |
---|---|---|---|
Mercedes-Benz | C-Class | W203 | 2000–2007 |
Mercedes-Benz | CLK-Class | W209 | 2002–2009 |
Mercedes-Benz | E-Class | W211 | 2002–2009 |
Mercedes-Benz | SLK-Class | R171 | 2004–2010 |
Mercedes-Benz | CLS-Class | W219 | 2004–2010 |
🔍 Important: This part often needs to be programmed to your vehicle (VIN-specific coding). Replacement typically requires a diagnostic tool like XENTRY, and sometimes dealer support.
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