Module Programming by Mail — Dealer-Level Work, No Dealer Visit

What We Program by Mail

Modern cars run on computers, and when one fails, the replacement has to be programmed to the car — a used module out of another vehicle will not simply plug in and work. That programming is the part most shops and locksmiths cannot do. It is exactly what we do:

• ECU / PCM (engine computer) — programming and cloning, including transferring your car's data into a replacement used module.
• TCM (transmission control module) — programming and cloning for replacement transmission computers.
• Immobilizer and anti-theft modules — the modules that decide whether your key is allowed to start the car, including many all-keys-lost situations where the module and keys are sent to us together.
• Body and comfort modules — on many makes, depending on the car and the failure.

A real example: a customer installed a used transmission control module in a 2009 Range Rover and the car would not run right. We programmed that module with Jaguar Land Rover's own SDD dealer software — the same system the dealer uses — and the car was back on the road without buying a new module at dealer prices.

How Mail-In Programming Works

1. Call first — (678) 616-2333. Have your year, make, model, and VIN handy. We confirm that your module and your car can be done by mail before you ship anything. Most can — and if yours is one that needs the car present for a final security step, we will tell you straight on that call, not after your module is already in a box.
2. Ship the module to us. Pack it well, insure the package, and put a note inside the box with your name, phone number, return address, and the car's year, make, model, and VIN. If your job involves keys, we will tell you exactly which keys to include.
3. We program it on the bench. Your module is programmed or cloned with dealer-level tools and verified before it leaves.
4. We ship it back, tracked. Install it in the car. Most bench-programmed modules go in as plug-and-play; if your car needs one final step after install, we tell you before you ship, so there are no surprises.

Where to ship (call first — please do not send a module without talking to us):
Lock to Lock, 4005 Wetherburn Way NW Suite B6, Peachtree Corners, GA 30092

Mail-In Key Programming by Brand

For the three brands where mail-in key work is most in demand, we have a dedicated page with the full model list:

• BMW & Mini keys by mail — send the CAS or FEM/BDC module; new keys programmed on the bench, including all-keys-lost.
• Mercedes keys & EIS by mail — new keys from your EIS, plus EIS testing, repair, and cloning.
• Range Rover & Land Rover keys by mail — send the KVM module; new keys programmed, spares and all-keys-lost.

Module dead? We also clone modules by mail — all your car's data copied from the failed module into a good donor.

Who Uses This Service

• Repair shops and independent mechanics who can turn wrenches but do not own dealer-level programming tools.
• Used-car dealers and lots with a car down because of a module or key problem.
• Owners far from a dealer — or facing a dealer quote for a new module when a used one plus programming costs far less.
• Owners anywhere in the US. Our mobile key service covers Metro Atlanta; this mail-in service covers the whole country, because the module travels instead of the car.

What It Costs

Programming is priced by the vehicle and the module, so we quote each job on the call — before you ship, with no obligation. The math that makes this service worth it: a used module plus professional programming usually lands far below the dealer's price for a brand-new module and their programming fee, and your car keeps its original mileage, VIN data, and key setup where the job allows it.

In Metro Atlanta and need us at the car instead? See our car key replacement and ignition repair services — we come to you.

Mention this website when you call for 10% off any service.