Mobile Diesel Mechanic II

Mobile Diesel Technician Level II

Headquartered in Indianapolis, Cox Fleet has grown to become one of the largest fleet maintenance companies in the country. Cox Fleet is the leading provider of on‑site mobile maintenance and repair services nationwide, offering mobile on‑site fleet service for light, medium, and heavy‑duty trucks and trailers. Cox Fleet also services customers utilizing its 50+ nationwide service centers; each offering accident repair, painting, refurbishment, and heavy mechanical repair.

The company is supported by a 24/7 in‑house call‑center and provides scheduled maintenance services and unscheduled services to fleets anywhere, anytime.

The Mobile Diesel Technician II will be responsible for performing licensed DOT inspections, preventative maintenance inspections, light and follow‑up repairs, light mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned. The Diesel Technician II can perform more advanced diagnostics and repairs under the supervision of a Sr Mobile Diesel Technician or higher. The Diesel Technician II continues to learn additional advanced mechanical skills and diagnostic techniques.

A successful Diesel Technician II complies with all company policies and achieves high level performance metrics.

• Perform scheduled preventative maintenance ("PM"), DOT inspections and follow‑up repairs on light, medium and heavy‑duty vehicles in a mobile/field environment.
• Perform minor adjustment and repairs on various types of truck equipment including electrical, brake, cooling, starter/alternator, fan clutch, engine electronics, diesel steering, engines, transmissions, clutches, and differentials.
• Diagnose, adjust, and repair truck equipment; inspect, test, and listen to defective equipment using handheld computers, pressure gauges and other instruments.
• Road test vehicles to diagnose malfunctions and ensure proper operation.
• Identify problems; use sound judgment to generate and evaluate alternatives.
• Independently manage parts inventory on company‑issued service truck and perform periodic reconciliation.
• Maintain and operate the service vehicle; conduct safety checks and pre‑/post‑trip inspections.
• Work with and listen to clients and customers to assess needs, provide information or assistance, and resolve problems.
• Manage concurrent tasks; prioritize work activities and time allocations.
• Use hand tools, precision instruments, diesel tools, welding equipment, lifts, and jacks.
• Document work per company standards and upload pictures, parts used, and all findings on Repair Orders (RO) using the proprietary TRAIT application.
• Accurately complete DOT forms and other required documentation in a timely manner.
• Work independently and manage own daily schedule.
• Maintain high productivity and work within or close to standard repair times.
• Obtain parts from approved local and national vendors as necessary.
• Communicate with management and support team via email or phone for repair estimates, purchase orders, and RO notes.
• Perform all work in compliance with safety, health, environmental policies and federal regulations (OSHA, EPA, DOT).

• High school diploma or GED and 3 years of experience in a related field. Alternative qualifications may include a degree or certification beyond a HS diploma and five years of experience.
• Possess and supply a set of hand tools necessary to perform duties.
• Obtain Automotive Service Excellence (ASE) certification T8 (PMI) within eighteen (18) months.
• Pass DOT‑regulated background screening and physical. A valid DOT medical card with more than four (4) months of validity may be submitted instead.
• Must be at least 21 years old and hold a valid driver’s license.
• Maintain a valid driver qualification file.

• ASE T8 (PMI) certification

• ASE T3 (Drivetrain) certification
• ASE T4 (Brakes) certification
• ASE T5 (Suspension) certification
• ASE T6 (Electrical and Electronic Systems) certification
• ASE T7 (HVAC) certification
• ASE 608/609 certification*

• Understand implications of new information for current and future problem‑solving.
• Ability to lift, bend,…