Full-Service Mobile Diesel Repair
From emergency roadside breakdowns to scheduled fleet maintenance — Road Wrench brings the shop to you, anywhere in Arizona, 24 hours a day.
Call (480) 849-5261No Tow. No Wait. We Come to You.
When your truck goes down, every hour costs money. Road Wrench dispatches immediately to your location — on the highway shoulder, at a rest stop, or at your yard. Our mobile service units carry the tools and parts to handle most repairs on the spot.
Emergency Roadside Repair
Broken down on I-10, I-40, or anywhere in Arizona? We dispatch immediately. Our mobile units are equipped to handle most roadside failures on the spot — no tow required.
- Immediate dispatch, day or night
- On-site diagnosis and repair
- No tow truck needed in most cases
- Statewide Arizona coverage
- All major highways and interstates
Engine Diagnostics & Repair
Professional-grade diesel engine diagnostics using the latest scan tools. We identify fault codes, diagnose the root cause, and perform repairs on-site — getting you back on the road fast.
- Full ECM/ECU diagnostic scanning
- Fuel system diagnosis and repair
- Turbocharger inspection and service
- Cooling system repairs
- Injector and pump service
Brake Systems
Air brake inspection, adjustment, and repair for trucks and trailers. Safety-critical work performed to DOT standards — we don't cut corners on brakes.
- Air brake inspection and adjustment
- Brake chamber replacement
- Slack adjuster service
- Brake drum and shoe replacement
- DOT brake compliance inspection
Electrical & Wiring
Trailer lighting failures, chassis wiring faults, alternator issues — we diagnose and repair all heavy duty electrical systems on-site.
- Trailer lighting and ABS systems
- Chassis and cab wiring repair
- Alternator and starter service
- Battery testing and replacement
- Gladhand and connector repair
Trailer Repairs
Suspension, landing gear, seals, and structural trailer repairs handled at your location. We work on all trailer types — flatbed, dry van, reefer, and more.
- Suspension and spring repair
- Landing gear service and replacement
- Door seals and hardware
- Mudflap and bracket repair
- Reefer unit basic service
Preventive Maintenance
Scheduled PM services to keep your fleet running and avoid costly breakdowns. We come to your yard or terminal — no need to take trucks out of service for a shop visit.
- Oil and filter changes
- Fuel filter service
- Coolant system flush
- Belts and hoses inspection
- Full pre-trip inspection service
Need Service Now?
Call us 24/7 for emergency dispatch or to schedule a service appointment.