Multi-system scanning
Engine, transmission, ABS, SRS, body, HVAC, and infotainment scanned in one pass.
Computer Diagnostics
Auto Computer Diagnostics in Boulder, CO
Modern vehicles run on dozens of computers. We have the tools and the know-how to diagnose, program, and repair the ones that misbehave.
Module-level diagnostics, programming, and adaptations for modern vehicles. Engine, transmission, ABS, SRS, body, HVAC, infotainment, and hybrid or EV systems. Factory-grade scan tools, ASE certified specialists, and the experience to read modern vehicle networks correctly.
From scan to programming, in one shop.
Most modern vehicles have twenty to one hundred control modules talking on internal networks. We service them.
Module programming
ECU and TCM programming, software updates, and adaptations to factory specification.
Component adaptations
Throttle bodies, transmissions, steering angle sensors, and battery registrations after replacement.
Key programming
Key and remote programming where supported. We tell you straight when it requires the dealer.
Hybrid and EV system scans
High-voltage battery, inverter, and DC-DC converter diagnostics with the right tools.
Factory-level scan tools
OEM scan tools for major brands plus aftermarket coverage for everything else.
When you need module-level diagnosis.
If you notice any of the following, do not wait. Small issues become expensive ones quickly.
- Multiple warning lights on at once
- Intermittent electronic faults that come and go
- Modules not communicating after a repair or battery change
- Vehicle behaves differently after a battery replacement
- Issues that appeared after collision repair
- Aftermarket accessory installs causing CAN-bus errors
How we trace a module fault.
Full vehicle scan
Every module, every code, current and stored. The complete picture before we narrow.
Isolate to the specific module
Cross-reference codes across systems to identify which module is the source of the problem.
Live data and adaptation review
Real-time module values, learned adaptations, and software version checked against spec.
Repair, program, or replace
Sometimes a software update fixes it. Sometimes the module is dead. We tell you which.
Relearn and verify
Post-repair adaptations, drive cycles, and verification that all modules communicate correctly.
Why bring computer work here.
Factory and aftermarket scan tools
OEM tools for major brands and broad aftermarket coverage. The right tool for your vehicle.
ASE certified electronics specialists
Electronics is its own ASE specialty. We have certified specialists on staff.
We do not ship out work that should stay in shop
Most module work that other shops send to the dealer, we handle. Faster turnaround, lower cost.
Honest about dealer-only work
When a job genuinely requires the dealer, we tell you. We do not pretend, and we do not waste your money.
Mile-high roads ask more of every vehicle.
Boulder vehicles work harder. Thinner air, hard freezes, dust, sun, and steep grades all wear parts faster than the manufacturer schedules assume. We tune our service intervals to how your vehicle actually lives at altitude.
Altitude
Lean-running engines, harder-working turbos, and drivetrains that climb every commute.
Freeze cycles
Repeated thaw and refreeze chews through seals, hoses, batteries, and brake hardware.
UV and dust
High-altitude sun and grit accelerate paint, plastics, glass, and intake fouling.
Frequently Asked Questions
Modern modules ship as blanks or with generic software. Replacement modules typically need to be programmed with software specific to your vehicle's VIN. Some components also need adaptations after installation, like throttle bodies or transmissions, so the vehicle learns the new component's characteristics.
You may also need
Boulder talks. We listen.
“These guys are honest, transparent, and clearly know what they are doing. They walked me through everything with photos before doing the work.”
Sarah K.
2019 Subaru Outback
“Best shop in Boulder. Free loaner, fair pricing, and they actually care about doing the job right. Will not take my truck anywhere else.”
Marcus T.
2017 Toyota 4Runner
“I am picky about who touches my EV. Legacy was the only shop locally that I trusted with the work, and they delivered.”
Priya N.
2022 Tesla Model Y
“These guys are honest, transparent, and clearly know what they are doing. They walked me through everything with photos before doing the work.”
Sarah K.
2019 Subaru Outback
“Best shop in Boulder. Free loaner, fair pricing, and they actually care about doing the job right. Will not take my truck anywhere else.”
Marcus T.
2017 Toyota 4Runner
“I am picky about who touches my EV. Legacy was the only shop locally that I trusted with the work, and they delivered.”
Priya N.
2022 Tesla Model Y
Ready to Book?
Schedule your auto computer diagnostics today.
Free loaner vehicles for qualifying repairs. Photo and video documentation on every job. Three-year, 36,000-mile NAPA warranty.