Mercedes-Benz W204 W207 EIS EZS Electronic Ignition Switch Immobilizer Module

MERCEDES-BENZ W204 & W207 EIS/EZS REPLACEMENT

🔑 Restore Reliable Ignition & Key Operation

Replace your malfunctioning Mercedes-Benz Electronic Ignition Switch with a professionally tested used EIS/EZS module from Route Auto Repair.

The EIS—also called the EZS, ignition lock module, or immobilizer module—communicates with the key, steering lock, transmission, and engine computer to authorize the vehicle to start.

✅ COMPATIBLE MODELS

• Mercedes-Benz W204 C-Class
• Mercedes-Benz W207 E-Class Coupe
• Mercedes-Benz W207 E-Class Cabriolet
• Additional compatibility depends on the original part number and vehicle configuration

🛡️ PRODUCT FEATURES

• Professionally tested used EIS/EZS replacement
• Inspected for proper electronic operation
• Exact or verified interchangeable part number supplied
• 6-month limited warranty
• Professional support from Route Auto Repair
• Ideal replacement for a failed or malfunctioning ignition switch module

⚠️ VERIFY COMPATIBILITY BEFORE ORDERING

Compatibility must be confirmed using the complete part number from your original EIS.

The product pictured is a representative example and may not be the exact unit supplied. You will receive either the exact part number ordered or a verified directly interchangeable replacement.

Electronic modules may require vehicle-specific programming, cloning, personalization, coding, or key synchronization before installation.

Please contact Route Auto Repair with your VIN and original EIS part number if you need help confirming compatibility or programming requirements.

🔍 DIAGNOSIS REQUIRED BEFORE PURCHASE

Before purchasing an EIS replacement, have the vehicle’s key and Electronic Steering Lock (ESL) professionally diagnosed and tested.

A defective key, failed ESL, wiring problem, weak battery, or communication fault can produce symptoms similar to a failed EIS. A no-crank, no-start, key-not-recognized, or ignition-not-activating condition does not automatically confirm that the EIS is defective.

Proper diagnosis helps prevent unnecessary module replacement and ensures the correct component is repaired or replaced.

🚨 COMMON EIS/EZS FAILURE SYMPTOMS

• Key will not turn or is not recognized
• Ignition will not switch on
• Intermittent no-crank or no-start condition
• Steering lock will not activate or release
• Vehicle starts only intermittently
• No communication with the Electronic Ignition Switch
• Immobilizer authorization or key-related fault codes

🔧 PROFESSIONAL MERCEDES-BENZ MODULE SERVICE

Route Auto Repair specializes in:

• Mercedes-Benz EIS/EZS diagnostics
• EIS cloning and replacement
• Mercedes-Benz key programming
• Immobilizer system repairs
• ESL and steering-lock diagnostics
• Advanced automotive module programming

🏆 ROUTE AUTO REPAIR

Advanced Diagnostics • Module Programming • Professional Results

6-MONTH LIMITED WARRANTY

This tested used replacement includes a six-month limited warranty. Coverage applies to the supplied EIS module and is subject to the complete warranty terms, proper diagnosis, correct installation, and required programming.