Audi A4 / A5 / Q5 BCM Cloning Service – D70F3380 & D70F3634

Having problems with a failed or defective Audi BCM? Instead of replacing multiple matched components, send us your original BCM along with a compatible replacement module and let Lacorte Automotive handle the data transfer.

This service covers supported Audi A4, A5, and Q5 BCM modules using the D70F3380 or D70F3634 processor.

We transfer the applicable vehicle-specific data from your original module to a compatible replacement BCM, then verify the completed module before returning it to you.

Common BCM Failure Symptoms

A failing BCM may cause symptoms such as:

• Vehicle will not start or intermittently will not start
• Key recognition/start authorization problems
• No response when attempting to start the vehicle
• Intermittent electrical problems
• BCM communication faults
• Multiple electrical systems malfunctioning simultaneously
• Module no longer communicating with diagnostic equipment
• Water-damaged or electronically damaged BCM
• Original BCM has suffered an internal hardware failure
• Replacement BCM requires the original vehicle data transferred

Proper diagnosis should be performed before sending the module. Other vehicle faults can produce similar symptoms.

Supported BCM Modules

This service currently supports:

Audi A4 / A5 / Q5

• BCM – D70F3380
• BCM – D70F3634

If you are unsure which version you have, send us a clear picture of your BCM 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 both BCM modules

Send us:

• Your original BCM
• Compatible replacement/donor BCM

3. We Clone Your Original Data

Lacorte Automotive transfers the applicable vehicle-specific data from your original BCM to the compatible replacement module.

4. Tested & Verified

The completed module is bench checked and verified before return.

5. We Ship It Back

Your original and cloned replacement BCM are returned to you.

Fast 1–2 Business Day Turnaround

We understand that a failed module can leave your Audi sitting in the driveway or taking up valuable space in a repair shop.

That's why Lacorte Automotive pushes for a typical 1–2 business day turnaround after receiving your modules.

Our goal is simple: get your module serviced and back on its way as quickly as possible.

What You Need to Send

• Original Audi BCM
• Compatible replacement/donor BCM
• Vehicle VIN
• Required ownership documentation

Replacement BCM is not included with this listing.

Proof of Ownership Required

Because these modules can contain vehicle security/start-authorization information, 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 listing is for a mail-in BCM cloning service only.

Compatibility depends on the exact module, processor, hardware/software configuration, and vehicle application. A replacement module that physically looks identical is not automatically compatible.

If you're unsure, contact us before ordering with:

• Picture of original BCM label
• Picture of replacement BCM label
• Vehicle year/model
• VIN

We'll help confirm whether your modules are suitable for the service.

Lacorte Automotive
Professional Automotive Electronics • Fast Turnaround • Quality Service

Audi A4 / A5 / Q5 BCM Cloning

D70F3380 & D70F3634 • Mail-In Service • Typical 1–2 Business Day Turnaround