Chattanooga · mobile diagnostics & coding
Your car is talking. I listen — and I come to you.
Mobile automotive diagnostics, digital health reports, and feature coding on Ford, RAM, and Jeep. Professional equipment, at your home, your office, your driveway. No waiting room. No dealership visit. No guessing.
Texting is the fastest way to start — or call (423) 401-0218. I verify compatibility and give you the price before we schedule.
live scan · Chattanooga and surrounding areas
About
I'm Travis. This is a one-person operation — and that's the point.
I'm Travis, and this is a one-person mobile diagnostic and coding service in Chattanooga. There's no shop to drive to and no waiting room to sit in. I bring professional equipment to your driveway, your office, your parking lot — and I work where your car already is.
Every paid diagnostic ends with a digital report — codes explained, findings, and recommended next steps. Something you can hold, something you can act on.
A lot of what I do is vehicle coding: changing how your car behaves through the modules it already has. Auto start-stop disable on a Ford. Bambi mode on a Jeep. Mirror approach lights on a RAM. Configuration work, done properly, where your vehicle supports it.
If I can't help, I'll tell you straight.
You'll always know the cost before I drive to you. And if I can't deliver — you won't pay a dollar.
Services & pricing
What I do, and what it starts at
Diagnostics, resets and relearns, auto start/stop work and packages — electronic services only at these starting prices. Compatibility varies by year, make and model, and it's verified before any appointment.
Diagnostics
Resets & Relearns
Coding
Packages
Hybrid & electric · pre-purchase inspection
The most dangerous thing you could do buying a hybrid - sign without someone reading from the high-voltage system.
HYBRID / ELECTRIC PRE-PURCHASE INSPECTION — $199
Hybrid and electric vehicles only · 90–150 minutes · at your location
What I read from the vehicle
- I read live data from the hybrid battery - block voltages, internal resistances, state of charge, temperatures - to tell you honestly if the pack is degrading.
- Insulation resistance on the high-voltage system - if there's leakage, you'd be driving something dangerous without knowing.
- Engine and electric motor data.
- ADAS safety systems - front radar, camera, blind spot - to confirm they can protect you.
- I/M readiness - if monitors aren't ready, someone cleared codes before you'd look, and something is hidden waiting to surface.
- Pending and permanent codes - the ones no scanner can erase, telling you if something happened to this vehicle that someone wanted hidden.
You'd receive a branded, documented PDF report - evidence from the machine - that whoever is selling this car did not want you to see. If something is wrong - you'd know, and you'd walk. If it's clean - you'd sign with certainty. Either way - you'd be free.
Best for: anyone buying a used hybrid or electric vehicle - Toyota, Lexus, Honda, Ford, Hyundai, Kia - where the high-voltage battery is the single most expensive component, and no one at the dealership will check it before you sign.
For hybrid and electric vehicles only. Have a gas vehicle? The standard Pre-Purchase Electronic Inspection ($99) covers it — see the Diagnostics list above.
Travel
- 0–10 miles — free
- 10–20 miles — +$10
- 20–30 miles — +$20
- 30–40 miles — +$30
- 40+ miles — custom quote
Serving Chattanooga and surrounding areas.
Payment
- Cash
- Card
- Venmo
- Zelle
- Cash App
Paid at the appointment — nothing up front.
Prices are starting prices. Final pricing can depend on the vehicle, the location and the work involved. Full service pages →
Straight answers
Questions I get asked
What does 423Code actually do?
Mobile automotive diagnostics, digital health reports and feature coding — electronic services only, at your home, office or driveway. I read what your vehicle's computers are reporting, explain it in plain English, and carry out electronic services on site. Engine, transmission, brake and general mechanical repair are not part of what I do.
Will this work on my vehicle?
Compatibility varies by year, make and model — so nothing is promised up front. Send your year, make, model, engine and what the vehicle is doing, and I'll confirm what's supported and tell you plainly if something isn't before you spend a dollar.
What does feature coding involve?
Coding changes how your vehicle behaves through the modules it already has — things like auto start/stop behaviour, lighting, chimes and convenience features. No hardware modifications and no aftermarket parts, only configurations your vehicle supports. I verify first; if it isn't supported on yours, I say so before you spend anything.
Where do you work?
Mobile service in Chattanooga and surrounding areas. Your driveways, offices and parking lots are all normal places to work — no shop visit and no waiting room. Include your ZIP with your request and I'll confirm coverage before an appointment is scheduled.
How much does it cost?
Diagnostics, resets and relearns carry published starting prices — $35 to $99 — listed on the services section of this page and on the services page. Final pricing can depend on the vehicle and the work involved, and a travel fee applies beyond 10 miles. Nothing is charged before you approve the price.
What do I get from a paid diagnostic?
A digital health report: the trouble codes found across your vehicle's modules, what they mean, what the data showed, and recommended next steps. It's yours to keep and yours to use.
Feature coding
The things your dealer won't touch. I will.
Vehicle coding changes how your car behaves — through the modules it already has. No hardware modifications. No aftermarket parts. A configuration, verified, on-site.
Ford
FORScan- Auto start-stop disable
- Double honk elimination
- Global windows from the key fob
- Bambi mode
- Drive mode memory
- Tire size recalibration
- 30-minute idle shutdown
- Turn signal flash count
- Disable fake engine noise
- MyKey restriction clearing — reprogram the key as admin to remove a previously-set speed cap
- Key programming — transponder and smart keys
RAM & Jeep
AlfaOBD- Auto start-stop disable
- Bambi mode — fog lights with high beams
- Mirror approach lights and puddle lamps
- Tire size and speedometer recalibration
- OEM remote start enable
- TPMS adjustment
- Key fob programming
- Air suspension calibration
European
BMW · Mercedes · VAG- Start-stop memory and disable
- Mirror auto-fold on lock
- Digital speedometer activation
- Seatbelt chime cancellation
- Lighting and DRL configuration
- Needle sweep and gauge staging
Other brands
Other coding and personalization on Toyota, Honda, Nissan, Subaru — depending on year and model. Ask and I'll check.
Compatibility depends on year, make, and model. I verify before I book — if your vehicle doesn't support it, I tell you before you spend a dollar.
Go deeper
The long version, written out in full
The guides behind the work I do most — what it actually is, how it's done, and what's honestly possible on your vehicle.
Ford
RAM & Jeep
Diagnostics
Compatibility depends on year, make, and model. I verify before I book — if your vehicle doesn't support it, I tell you before you spend a dollar.
How it works
Three steps, no surprises
- 1
Tell me your vehicle
Year, make, model, engine — and what you're experiencing, or what feature you want changed.
- 2
I confirm and price
I check compatibility and give you an honest price before we schedule. No surprise, no risk.
- 3
I come to you
I show up, connect professional equipment, and I deliver — a diagnostic report, a code change, a feature unlocked. You see the result.
Digital health report
Every paid diagnostic includes a digital health report. You walk away with something real.
- Full-system scan across your vehicle's modules.
- Trouble codes — identified and explained, not just numbers.
- Findings — what the data tells us.
- Recommended next steps — where you go from here.
- Delivered digitally — yours to keep, yours to use.
This isn't a code printout from an auto parts store. This is a professional document — the kind you'd pay a shop hundreds for — delivered directly to you, on-site. You know what your car is reporting. You know where to go next.
Contact
Call or text — I answer.
For diagnostics — send
YEAR + MAKE + MODEL + ENGINE + WHAT YOU'RE EXPERIENCING
For coding — send
YEAR + MAKE + MODEL + WHAT FEATURE YOU WANT CHANGED
I'll confirm compatibility and give you the price before we schedule.