Have a failed Audi A6 or Q7 J518 Access/Start Authorization module?

With this service, you simply mail us your original J518 module. Lacorte Automotive provides a compatible remanufactured replacement J518, transfers the applicable vehicle-specific data from your original module, tests the completed replacement, and ships it back to you.

You Send Your Original — We Provide the Replacement

Unlike our standard J518 cloning service, you do NOT need to purchase or send a donor module.

You send us your original J518 and we'll supply the compatible remanufactured replacement.

Every replacement supplied with this service includes our 3-Year Warranty.

Common J518 Failure Symptoms

A failing J518 may cause symptoms such as:

• Vehicle will not start
• Intermittent no-start condition
• Ignition will not switch on
• Key/start authorization problems
• Steering column lock-related faults
• No response when attempting to start
• Intermittent ignition operation
• J518 communication faults
• Module no longer communicates with diagnostic equipment
• Vehicle becomes immobilized due to module failure
• Water or moisture damage
• Internal electronic failure

Proper diagnosis is recommended before ordering. Battery, wiring, key, steering lock, electrical, or other module faults can produce similar symptoms.

Supported J518 Modules

This service currently supports the following Audi A6 / Q7 J518 configurations:

• J518 – 0L01Y
• J518 – 3L40K
• J518 – 4L40K
• J518 – 1L59W

Not sure which version you have? Send us a clear picture of your J518 module label before ordering and we'll help verify compatibility.

How It Works

1. Purchase the Service

Place your order through our website.

2. Mail Us Your Original J518

You only need to send us your original module. No replacement or donor J518 is required.

3. We Provide the Remanufactured Replacement

We'll match your original J518 with an appropriate compatible remanufactured unit from our inventory.

4. We Transfer Your Original Data

The applicable vehicle-specific data from your original J518 is transferred to the replacement module.

5. Tested & Verified

The completed replacement is bench checked and verified before leaving our facility.

6. We Ship It Back

Your completed remanufactured J518 is securely shipped back to you for installation.

Fast 1–2 Business Day Turnaround

A failed J518 can leave your Audi completely immobilized. That's why Lacorte Automotive pushes for a typical 1–2 business day turnaround after receiving your original module, subject to module condition and replacement availability.

Our goal is to get your replacement completed and back on its way as quickly as possible.

3-Year Warranty Included

Your remanufactured replacement J518 includes a 3-Year Warranty covering defects in the supplied remanufactured module and our workmanship, subject to our applicable warranty terms.

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

What's Included

• Compatible remanufactured J518 replacement
• Transfer of applicable original vehicle data
• Professional bench service
• Testing and verification
• 3-Year Warranty
• Typical 1–2 business day turnaround after receipt

You Send Us:

Your original J518 module

We Send You:

A remanufactured, cloned and tested replacement J518

Proof of Ownership Required

Because the J518 is associated with the vehicle's access/start authorization system, proof of vehicle ownership is required before service is performed.

Please provide:

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

Documentation must correspond with the vehicle being serviced.

Important — Please Read Before Ordering

This is a mail-in remanufactured J518 replacement service.

Compatibility depends on the original module, processor, part number, hardware/software configuration, and vehicle application.

If the required information cannot be recovered from your original module because of severe physical or electronic damage, additional work or vehicle-side programming may be required. We'll contact you if the standard service cannot be completed.

If you're unsure about compatibility, send us a picture of your original J518 label and VIN before ordering.

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

Audi A6 / Q7 J518 Remanufactured Replacement

0L01Y • 3L40K • 4L40K • 1L59W

You Send Your Original • We Provide the Replacement • 3-Year Warranty • Typical 1–2 Business Day Turnaround