Mail-In BCM / Body Control Module Repair
Random electrical failures across multiple systems — windows, locks, lights, horn, wipers — usually trace to one module: the BCM. We repair and reprogram body control modules for all makes and models. 48–72 hours, 12-month warranty.
Get a Free Quote →Common BCM Failures We Repair
When multiple electrical systems misbehave at the same time, the BCM is almost always the common point of failure. Here are the most frequent faults we see.
Power Windows & Locks Acting Randomly
Windows rolling down on their own, doors locking and unlocking without input, or accessories activating unexpectedly — a classic BCM failure pattern caused by output driver shorts or processor faults on the module.
- ✓ Output driver testing & repair
- ✓ Short circuit isolation
Lighting System Failures
Interior lights staying on, exterior lights cycling on their own, or entire lighting zones going dark. The BCM controls most lighting relay outputs — a hardware failure causes these symptoms across multiple zones simultaneously.
- ✓ Relay driver repair
- ✓ All lighting zone testing
U-Code CAN Communication Loss
Multiple U-codes on a scan tool pointing to the BCM as the failed node indicate the module has lost CAN communication. A failed CAN transceiver or power supply on the BCM board is the typical root cause.
- ✓ CAN network circuit repair
- ✓ Power supply restoration
Horn, Wipers & HVAC Not Responding
Horn not working, wipers running at wrong speeds or not at all, or HVAC controls unresponsive — when these occur together or alongside other electrical faults, the BCM is typically the root cause rather than multiple individual component failures.
- ✓ Full accessory output diagnosis
- ✓ Bench-verified before return
Water Damage & Corrosion
Water damage is one of the most common BCM failure modes — particularly in vehicles where the BCM is mounted under the dash near the footwell. We clean, rework, and component-repair water-damaged boards.
- ✓ Corrosion removal & rework
- ✓ Component replacement under magnification
Security / Alarm Triggering Randomly
Alarm going off without cause, immobilizer activating without key input, or remote fob no longer recognized after BCM failure — these security-related BCM faults are commonly caused by corrupted EEPROM data or processor failure.
- ✓ EEPROM data repair
- ✓ VIN-matched reprogramming
Your Original BCM — Repaired, Reprogrammed, Returned
A used BCM replacement is rarely plug-and-play — it often requires dealer-level programming to match your VIN, key fob codes, and vehicle options. We repair your existing module, program it to your exact configuration, and ship it back ready to install.
Most BCM repairs are completed in 48–72 business hours. We include any vehicle-specific post-install instructions with every return shipment.
- ✓VIN-matched — no dealer visit required after installation
- ✓All vehicle options and key fob codes preserved
- ✓Full accessory output test before return shipping
- ✓12-month warranty — failures within the year are repaired free
No Fix — No Fee. Guaranteed.
If we cannot repair your BCM, we ship it back at no charge and you owe nothing. No diagnostic fee. No return shipping cost. Zero.
If the repair fails within 12 months, we fix it again at no charge. The ShipYourECU guarantee is unconditional.
Get a Free Quote →How It Works — 3 Simple Steps
Contact Us First
Submit your vehicle details and symptoms. We confirm compatibility and tell you exactly what to remove and how to pack it — before you ship anything.
Ship Your Module
Pack in bubble wrap, ship via UPS, FedEx, or USPS from anywhere in the US. Email us your tracking number and we confirm receipt within 24 hours.
Receive It Repaired
Repair completed in 48–72 hours. We ship same day. Your module returns VIN-programmed and plug-and-play with a 12-month warranty.
Every Make. Every Model.
All domestic and import brands. Click your make for model-specific details.
BCM Repair FAQ
What does a BCM do and how do I know it’s failed?
The BCM (Body Control Module) manages your vehicle’s electrical accessories — power windows, door locks, interior lighting, horn, wipers, HVAC, and more. A failed BCM typically causes multiple electrical systems to misbehave simultaneously: accessories acting on their own, U-code communication faults on a scan tool, or complete loss of electrical function in certain zones.
Will the repaired BCM need dealer programming after I install it?
No. We program the BCM to your VIN and factory configuration before shipping it back. On most vehicles it is plug-and-play with no dealer visit required. We include any vehicle-specific post-install instructions with your return shipment.
Can you fix water-damaged BCMs?
Often yes. Water damage is one of the most common BCM failure modes we see. We inspect the board under magnification, clean corrosion, replace damaged components, and bench-test all outputs. We’ll assess it on arrival and contact you before proceeding if the damage is severe.
How long does BCM repair take?
Most BCM repairs are completed in 48–72 business hours from receipt. Rush service is available — mention it when you submit your quote request. We ship the same day the repair is completed.
What if you can’t fix my BCM?
We ship it back at no charge and issue a full refund. No fix, no fee — that’s the ShipYourECU money-back guarantee.
What vehicles do you repair BCMs for?
All major makes and models — Ford, Chevy/GM, Dodge/Chrysler/Jeep, Toyota, Honda, Nissan, Hyundai/Kia, BMW, Mercedes-Benz, Audi, and more. Contact us if you’re unsure about your specific module.
Ready to Fix Your Body Control Module?
Component-level repair. OEM programming. 48–72 hours. 12-month warranty.
Ship Your BCM Today →Get a Free Quote — Ship Your Module Today
Tell us your vehicle, module type, and symptoms. We respond within 2 business hours with a diagnosis and quote.