Mercedes EZS/EIS Ignition Repair Near You
Dallas • Arlington • Fort Worth • Plano • Irving
Most Mercedes EIS repairs completed same day in 2-4 hours at your location. No towing required — we come to you.
What Customers Say About Us
Mercedes EZS/EIS Repair Near Me in Dallas-Fort Worth
Mercedes ignition not recognizing your key? Our mobile technicians provide professional EZS/EIS diagnostics, repair, and key programming across the Dallas-Fort Worth metroplex using Mercedes Xentry dealer software.
We repair and program:
Most Mercedes EIS repairs completed same day in 2-4 hours at your location.
Mercedes EIS/EZS Module
Mercedes Ignition Repair
EIS Circuit Board
Common Symptoms
Dealer vs. Our Mobile Service
Dealership Pricing
- Towing$150–$300
- Diagnostic Fee$150–$250
- EIS Module (OEM)$1,000–$2,000
- Key Programming$300–$500
- Labor$400–$600
- Total$2,000–$3,650
Wait time: 5–10 business days
Our Mobile Service
- Diagnostic Fee$0 (Included)
- EIS Module$400–$800
- Key ProgrammingIncluded
- Mobile Service$0 (We Come to You)
- Total$600–$1,200
Most Mercedes EIS repairs completed same day in 2-4 hours at your location.
Repair Solutions We Offer
EIS Module Repair
$600–$800
Repair your existing EIS/EZS module — fix internal components and reprogram keys.
- Keep original module
- 1-year warranty
- Key programming included
- 2-3 hour service
EIS Replacement + Keys
$900–$1,200
Replace EIS module with new/reman unit and program new keys to your vehicle.
- New/reman module
- New keys included
- 2-year warranty
- Complete programming
Why Choose Not Your Basic Locksmith
Mercedes Xentry/DAS Diagnostics
Genuine Mercedes dealer diagnostic equipment for complete EIS programming and testing.
All-Keys-Lost Specialist
Lost all keys? We recover key data from the EIS and program new keys on-site.
Mobile Service Anywhere in DFW
No towing to the dealer. We come to your location with all Mercedes-specific tools.
W204, W212, W221 Expert
Specialist in Mercedes C-Class, E-Class, S-Class, and ML/GL electronic ignition systems.
Save up to $2,450 vs Mercedes dealership
Same-day professional service at your location
Technical Details
What is the EIS/EZS?
The EIS (Electronic Ignition Switch) or EZS (Elektronisches Zundschloss) is Mercedes' electronic ignition module. It authenticates your key, communicates with the immobilizer, and authorizes the vehicle to start.
Why Do EIS Modules Fail?
EIS modules fail due to worn ignition contacts, internal motor failure, circuit board degradation, or key slot wear. They can also develop communication errors with the vehicle's CAN bus network.
Affected Mercedes Models
W204 C-Class (2008-2014), W212 E-Class (2010-2016), W221 S-Class (2007-2013), W164 ML-Class (2006-2011), W251 R-Class, and other models with electronic ignition.
Frequently Asked Questions
What is the difference between EIS and EZS?
They are the same module — EIS is the English designation, EZS is the German designation. Both refer to the Mercedes electronic ignition switch.
Can you program Mercedes keys without the dealer?
Yes. We have Mercedes Xentry/DAS diagnostic equipment and can program keys, repair EIS modules, and perform all dealer-level operations.
What if all my Mercedes keys are lost?
We handle all-keys-lost situations. We access the EIS module, extract key data, and program new keys to your Mercedes.
How long does EIS repair take?
Most EIS repairs take 2-4 hours including diagnostics, repair/replacement, key programming, and complete system testing at your location.
Is EIS repair or replacement better?
If the module can be repaired, it's more affordable. If internal damage is extensive, replacement is recommended for long-term reliability.
Service Areas
We provide this service throughout the Dallas-Fort Worth area including:
And 80+ more cities across the DFW metroplex. View all service areas
Other Advanced Automotive Services
We also offer these dealer-level automotive electronics services across Dallas-Fort Worth:
Need Mercedes EZS/EIS Ignition Repair?
Same-day mobile service • Dealer-level equipment • All DFW cities
Most Mercedes EIS repairs completed same day in 2-4 hours at your location. No towing required.