Mercedes-Benz EIS-211 (SDT-12) Remanufactured & Cloned Exchange Service

Have a Mercedes-Benz with a failed EIS/EZS module? Don't spend thousands replacing the entire immobilizer system. Send us your original EIS and we'll clone your vehicle's data onto one of our professionally remanufactured replacement EIS modules.

We'll handle the cloning, testing, and return shipping so you receive a replacement module ready for installation.

How It Works

1. Order the service
Purchase this listing through our website.

2. Mail us your original EIS
Remove your original EIS module and ship it to Lacorte Automotive.

3. We clone your original data
Our technicians transfer the applicable vehicle-specific data from your original EIS to a compatible remanufactured replacement unit.

4. We test the replacement
The remanufactured EIS is tested and verified before it leaves our facility.

5. Get it back and install
Your completed replacement EIS is shipped back to you, ready for installation.

Typical Turnaround: 1–2 Business Days

Once we receive your EIS, we prioritize the service for a typical 1–2 business day turnaround.

We know a failed EIS can leave your Mercedes completely immobilized, so our goal is to get your replacement back to you as quickly as possible.

Common EIS Failure Symptoms

A failing EIS may cause:

• Key not recognized
• Key will not turn
• No ignition when key is inserted
• No crank/no start
• Intermittent starting
• Ignition or dash remains off
• EIS/EZS communication faults
• Vehicle suddenly becomes completely inoperative
• Original EIS has an internal electronic failure

Supported EIS Applications

Our current cloning service supports multiple Mercedes-Benz EIS configurations, including:

• 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)

Compatibility must be verified before service. Send us a clear photo of your EIS label and your VIN if you're unsure which version you have.

3-Year Warranty

Every remanufactured replacement EIS supplied through this service is backed by our 3-Year Warranty against defects in the remanufactured unit and our workmanship, subject to the applicable warranty terms.

We stand behind the electronics we supply and the work we perform.

What You Receive

• Professionally remanufactured replacement EIS
• Your applicable original vehicle data cloned to the replacement
• Testing and verification
• 3-Year Warranty
• 1–2 business day typical turnaround after receipt

You do not need to source a replacement EIS yourself — we provide the remanufactured unit.

Ownership Verification Required

Because the EIS/EZS is part of the vehicle's immobilizer system, proof of ownership is required before we perform the service.

Please provide:

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

The documentation must correspond to the vehicle being serviced.

Important

This is a mail-in service. You must send us your original EIS module before work can be completed.

Please contact us before ordering if you are unsure about compatibility or whether your original EIS can be serviced.

Lacorte Automotive
Professional Automotive Electronics • Fast Turnaround • Quality Remanufactured Modules

Mail It In. We Clone It. We Test It. We Warranty It.

3-Year Warranty | 1–2 Business Day Typical Turnaround