Mercedes-Benz EIS/EZS Cloning Service

Dealing with a Mercedes-Benz that suddenly won't recognize the key, won't turn on, or has a failed EIS/EZS module?

Lacorte Automotive offers professional EIS/EZS cloning for a wide range of Mercedes-Benz electronic ignition switch modules. We transfer the applicable vehicle-specific data from your original module to a compatible replacement module, allowing the replacement unit to be prepared for installation.

Common EIS Failure Symptoms

A failing or defective EIS/EZS can cause a variety of starting and ignition problems, including:

• Key will not turn or is not recognized
• No ignition when the key is inserted
• Vehicle will not crank or start
• Intermittent starting problems
• Ignition cuts out or fails intermittently
• Dash/cluster does not power up properly
• EIS/EZS communication faults
• Vehicle suddenly becomes completely inoperative
• Original EIS has an internal electronic failure
• Replacement EIS needs the original vehicle data transferred

Compatible EIS Modules

Our current service supports the following EIS module types:

EIS-164 (ST12)
EIS-169 (ST12)
EIS-203 (HC08)
EIS-209 (ST12)
EIS-209 Old (OK50E)
EIS-209 Old (3K91D)
EIS-211 (ST12)
EIS-211 Old (OK50E)
EIS-211 Old (3K91D)
EIS-215 (1D69J)
EIS-215 (ST12)
EIS-220 215 (HC08)
EIS-639 (HC08)
EIS-639 (ST12)
EIS-906 (ST12)

Please verify your exact EIS part number and processor/type before ordering. If you're unsure which version you have, send us a clear photo of the module label and we'll help determine compatibility.

Fast 1–2 Business Day Turnaround

We know a failed EIS can leave a vehicle completely immobilized. That's why Lacorte Automotive prioritizes EIS cloning orders with a typical 1–2 business day turnaround after receipt of the modules.

Ship your original EIS and compatible replacement module to us. Once received, we'll perform the cloning service, verify the completed module, and ship it back to you.

What You Send

• Original/failed EIS module
• Compatible replacement EIS module
• VIN and vehicle information
• Contact information for return shipping

Proof of Ownership Required

Because the EIS/EZS is part of the vehicle's immobilizer system, proof of ownership is required before any work is performed.

Please provide:

• Government-issued photo ID
• Vehicle title or current registration
• VIN

The ownership documentation must correspond to the vehicle being serviced.

Important — Please Read Before Ordering

This listing is for EIS/EZS cloning service only. Replacement modules are not included.

Compatibility depends on the vehicle application, EIS part number, hardware version, processor type, and software configuration.

If you are unsure whether your module is supported, send us a picture of your EIS label before purchasing.

Lacorte Automotive
Professional Automotive Electronics • Fast Turnaround • Quality Service

Typical turnaround: 1–2 business days after receipt of modules.