ECU Maverick
Mail-in ECU, ECM, PCM & TCM service
Expert module repair, shipped to your door
We diagnose, repair, and replace automotive control modules nationwide. Upfront pricing before you ship, bench-tested results, and a 6-month warranty on every unit.
Fully online — no phone tag, no shop visits. Every step documented by email.
Frequently asked questions
Do I need to remove the module myself?
How do I know the price before I ship?
What if my module can't be repaired?
What does the 6-month warranty cover?
Why don't you take phone calls?
From the bench: BMW N55 DME, crank-no-start
The BMW N55 DME is notorious for Valvetronic actuator shorts that fry internal driver circuits — causing limp mode, misfires, BSD communication failures, and crank-no-start conditions. Many shops give up and quote an expensive dealer replacement. This Bosch MEVD17.x board arrived dead. We replaced the failed components, repaired the damaged traces, and reprogrammed it for plug-and-play installation. It's back on the road — at a fraction of dealer cost.
Mail-in module repair & replacement
How module repair works
Whether your module can be repaired or needs to be replaced, the process is the same — one work order, everything documented by email, and a working module shipped back to your door.
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1
Submit a work order
Tell us your vehicle's year, make, and model, the module's part number, and the symptoms you're seeing. The more detail, the faster the turnaround.
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2
Review & accept your quote
Our technicians reply by email with your options, exact pricing, and terms. You review and accept before anything ships — no surprises.
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3
Ship your module to us
Send in your module. We repair it — or program your OEM remanufactured replacement — bench-test it, and ship it back ready to install.
Module faulty beyond repair? We'll program an OEM remanufactured replacement.
Not every module can — or should — be repaired. When yours is too far gone, the quickest way back on the road is an OEM remanufactured module that we program and match to your vehicle. Same work order, same quote-by-email process, often a faster turnaround than a repair.
It can also be the more economical choice — going straight to a programmed module skips the hourly bench testing and evaluation fees a repair diagnosis requires. You still send us your original module, and you get back a programmed, ready-to-go replacement.
A note on water damage
Water is the enemy of electronics. Once moisture gets inside a module, corrosion spreads beneath the components and the damage keeps progressing — which is why water-damaged units can't be reliably repaired. For these, a programmed OEM remanufactured module is the right fix, not a patch.
One form covers both repair and replacement — we'll recommend the right path in your quote.
✓ Upfront pricing
You approve the exact price and terms by email before any work begins. No hidden fees, no surprise charges.
✓ 6-month warranty
Every repair and programmed replacement is covered for six months against defects in parts and workmanship.
✓ 2-day shipping available
Expedited return shipping is available on request, so your vehicle spends less time off the road.
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Body Control Module (BCM) Repair & Programming
ECU Maverick repairs and programs body control modules (BCM) for a wide range of makes and models. BCM failure symptoms include power windows, locks, or wipers not responding, interior or exterior lights malfunctioning, battery drain, and intermittent electrical gremlins that come and go. We diagnose at the board level, repair the fault, and program the module for plug-and-play installation.
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Engine Control Module (ECM/ECU) Repair & Programming
ECU Maverick repairs and programs OEM engine control modules (ECM/ECU) from Bosch, Continental, Denso, Kefico, Delphi, and Siemens. Common ECM failure symptoms include check engine light, no-start or crank-no-start, misfires, limp mode, and loss of communication with the diagnostic port. We bench-test every unit, repair failed circuits at the component level, and program the module to your VIN for plug-and-play installation — no dealer visit, no additional coding. Every ECM repair is backed by our 6-month warranty.
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Transmission Control Module (TCM) Repair & Programming
ECU Maverick provides specialized repair and programming for OEM transmission control modules (TCM/TCU), including ZF 6HP (Bosch and Continental) and ZF 8HP (Bosch) mechatronic units. If you're experiencing hard shifting, gear slipping, delayed engagement, limp mode, or a transmission stuck in neutral, the TCM is a common cause — and repairing it costs a fraction of a new transmission. Modules are programmed to your vehicle for true plug-and-play installation, with a 6-month warranty on every repair.
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ABS Control Module Repair & Coding
ECU Maverick tests, repairs, and codes OEM ABS (anti-lock brake) control modules from ATE and Bosch. Typical ABS module failure symptoms include the ABS or traction control light staying on, a dead speedometer, and ABS fault codes that return after clearing. We restore the module to factory specifications and code it for your vehicle, so braking, traction control, and stability systems work exactly as they did from the factory.
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ZF 6HP & 8HP TCM Repair & Programming — Bosch and Continental
ECU Maverick repairs and programs Bosch and Continental TCMs for ZF 6HP and 8HP transmissions, with fast turnaround and true plug-and-play installation. Hard shifting, slipping gears, stuck in neutral, or limp mode? Bought a used TCM that won't program to your vehicle? We repair your original unit or program a replacement to your VIN — no additional coding needed after installation. We service all makes and models running ZF 6HP/8HP gearboxes, and every repair includes our warranty. Ship your TCM today and skip the dealer replacement bill.
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BMW & MINI FRM3 Footwell Module Repair — Same-Day Service
ECU Maverick repairs BMW and MINI FRM3 footwell modules, typically the same day we receive them. Classic FRM3 failure symptoms: headlights stuck on or off, turn signals not working, power windows dead, and interior lights that won't respond — usually after a battery change or jump start. Our repair fully restores your original module with no coding required: plug it back in and everything works. We also stock programmed plug-and-play FRM3 replacement modules for all BMW and MINI models. Warranty included on every repair and replacement.
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Mercedes-Benz M272 V6 & M273 V8 ECU — Programmed Plug-and-Play ECM
ECU Maverick supplies pre-programmed plug-and-play ECUs for Mercedes-Benz M272 V6 and M273 V8 engines — covering the C300, E350, E550, SL550, ML350, ML550, GL450, CLS550, and every other model running these engines. Each ECM is programmed to your VIN before it ships, so there's no extra coding, no dealer visit, and no SCN coding fees. Install it and drive. Fast turnaround, expert support, and warranty included.
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Mercedes-Benz Steering Lock (ESL/ELV) & EIS/EZS Ignition Repair
ECU Maverick repairs and programs Mercedes-Benz electronic steering locks (ESL/ELV) and EIS/EZS ignition switch modules. If your key won't turn, the dash shows a red steering wheel warning, or the steering column won't unlock, the steering lock module is the usual culprit. We offer both repair and programmed emulator solutions — plug-and-play, no coding needed. Ship your unit today for a fast fix.
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BMW F30 F31 F34 F35 15KLWUP Short Circuit Repair — DTC 804086
ECU Maverick repairs the 15KLWUP "short circuit to positive" fault on BMW F30, F31, F34, and F35 (3 Series and GT) modules. Symptoms: battery drains overnight, the instrument cluster won't sleep, and fault code 804086 stored. Our component-level repair fixes the short circuit permanently — plug-and-play, no coding required after installation.
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Mercedes-Benz 9G-Tronic TCM 725.0 VGS NAG3 Repair
ECU Maverick repairs and reprograms the Mercedes-Benz 725.0 VGS NAG3 transmission control module used in 9G-Tronic transmissions. Common symptoms: rough or harsh shifting, failure to engage gears, limp mode, and fault codes P073E00 and P07B700. We restore the TCM to full function and program it for your vehicle — far cheaper than a dealer mechatronic replacement, with warranty included.
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BMW 7 Series (F01/F02) Mechatronic TCM Repair — 740i, 750i, 750Li (2009–2012)
Rough shifting, delayed gear engagement, or fault codes like "Turbine Speed Sensor," 5088 (L1–L4), P07BF, 7E9, P0700, or 400626? ECU Maverick repairs and reprograms the Continental 6HP mechatronic TCM/TCU in 2009–2012 BMW 7 Series models — 740i, 750i, and 750Li — including part numbers 5WK750010AA, 1D3901, and 5WK75000AA. The most common failure is the internal turbine speed sensor, which we replace at the component level, restoring factory shift quality without replacing the transmission.
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ABS Module Repair — Fix Your ABS Light & Speedometer
ABS light on? Speedometer dead? Traction control disabled? ECU Maverick repairs ABS control modules for a wide range of makes and models, restoring anti-lock braking, stability control, and speed signal functions to factory specification. Submit a work order with your vehicle and part number, and we'll reply with upfront pricing before you ship.
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Airbag Control Module (SRS) Repair & Programming
Airbag light on? ECU Maverick repairs and reprograms airbag (SRS) control modules for a wide range of vehicles, restoring the supplemental restraint system to full functionality. Every repair and programming service includes our warranty. Submit a work order with your vehicle details and we'll email your options and exact pricing.
