• Mercedes-Benz C-Class – W205 Mercedes-Benz S-Class – W222 Mercedes-Benz GLC-Class – X253 Mercedes-Benz GLE-Class Coupe – X292 May also support other DAS4 / FBS4-equipped models Common Symptoms of a Faulty EIS/EZS Key does not turn in ignition No crank / no start condition Intermittent start failure No communication with EIS via diagnostic tools ELV (steering lock) not releasing Vehicle stuck in ignition stage 0
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Mercedes-Benz EIS/EZS Repair & Programming Service – W205 W222 X253 X292 (FBS4 / DAS4)

Mercedes-Benz EIS/EZS Repair & Programming Service – W205 W222 X253 X292 (FBS4 / DAS4)

$299.00 USD
$299.00 USD
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Mercedes-Benz EIS/EZS Repair & Programming Service – W205 W222 X253 X292 (FBS4 / DAS4)

This is a specialized repair and programming service for your original Mercedes-Benz EIS (Electronic Ignition Switch), also known as EZS. This service supports vehicles with FBS4 / DAS4 systems and helps resolve issues related to no start, key not turning, or lost communication. We retain your original data including VIN, key sync, and immobilizer status to ensure plug-and-play operation.

Supported Vehicle Models & Chassis

  • Mercedes-Benz C-Class – W205
  • Mercedes-Benz S-Class – W222
  • Mercedes-Benz GLC-Class – X253
  • Mercedes-Benz GLE-Class Coupe – X292
  • May also support other DAS4 / FBS4-equipped models

Common Symptoms of a Faulty EIS/EZS

  • Key does not turn in ignition
  • No crank / no start condition
  • Intermittent start failure
  • No communication with EIS via diagnostic tools
  • ELV (steering lock) not releasing
  • Vehicle stuck in ignition stage 0
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Getting Started

Submit Your Work Order

Fill out our simple work order form to get your unique work order number. We'll email you shipping instructions immediately. Ship your module to us using any carrier (USPS, FedEx, UPS). Include your work order number with your shipment.

What's Covered

Thorough Bench Testing

Every module is tested before and after repair to ensure full functionality. If your unit tests fine, shows no issues, or is deemed non-repairable, a bench fee applies. We'll contact you before charging anything beyond the base service fee.

What to Expect

Turnaround & Warranty

✓ Turnaround: 2-3 business days (complex jobs may take longer)

✓ Warranty: 6 months on repairs we perform

✓ Programming: Not required—plug and drive

About ECU Maverick — Expert ECU Repair & Programming Services

ECU Maverick specializes in component-level ECU repair and programming for European, domestic, and specialty vehicles. Based in Fort Myers, Florida, we serve independent repair shops, dealerships, and vehicle owners nationwide.

Where most shops rely on reprogram-and-replace methods, we take a different approach. Our technicians diagnose and repair individual circuits at the board level, restoring modules that others write off as failures. This expertise comes from years of reverse engineering and bench testing across thousands of control units.

Vehicles We Service

We specialize in European automotive electronics, including BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati, and Aston Martin ECU repair. We also service domestic vehicles, heavy equipment control modules, and marine electronics systems.

Why Shops and Owners Choose Us

Fast Turnaround — Most ECU repairs ship within 2–3 business days. Same-day rush service available.

Plug-and-Play Ready — Every module leaves fully programmed and coded to your vehicle. No dealer visit required.

Direct Communication — Text or call us and speak with a real technician. No ticket queues, no waiting.

6-Month Unlimited Mileage Warranty — Drive with confidence. Our warranty covers you regardless of how many miles you put on.

Our Commitment

We exist to keep your vehicle out of the dealership and back on the road—with reliable repairs, transparent pricing, and expert support from start to finish. Every job receives the same attention we'd give our own vehicle.