Mobile Diesel Tech II 7am - 5pm

Cox Fleet•Allentown, PA
•Onsite

About The Position

Cox Fleet is hiring a Mobile Diesel Technician II to provide mobile, on-site maintenance and repair services for light-, medium-, and heavy-duty vehicles. This role performs licensed DOT inspections and preventative maintenance, along with light and advanced repairs and mechanical, hydraulic, electrical, and electronic diagnostics. The technician is relied upon for advanced diagnostics and triage of complicated repairs, serves as a lead at customer jobsites, and acts as a consultant on the customer’s behalf. The role requires compliance with company policies and performance standards, as well as applicable safety, health, environmental, and federal regulations. The technician works independently in a mobile/field environment, manages a daily schedule and concurrent tasks, maintains a company-issued service truck and its inventory, and documents work using a company-issued iOS device and the TRAIT application. The schedule is Monday through Friday, 7:00 a.m. to 5:00 p.m.

Requirements

  • High school diploma or GED and 3 years of experience in a related field; alternatively, a different combination such as a degree or certification beyond high school in a related discipline, or 5 years of related experience.
  • At least 3 years of experience with refrigerated equipment.
  • Possess and supply the hand tools necessary to perform the job duties.
  • Complete company-required training.
  • Successfully complete and pass a DOT-regulated pre-employment background screening and DOT physical before employment; a valid DOT medical card with more than four months remaining may be submitted in lieu of a DOT physical.
  • Be at least 21 years old due to interstate operating authority commerce regulations.
  • Hold a valid driver’s license from the state of residence and be able to obtain and maintain a Driver Qualification File.
  • Obtain ASE T8 (PMI) certification and ASE 608/609 certification within 18 months if not already held.
  • Ability to lift, bend, climb, stand, and walk for extended periods and perform moderately heavy labor.
  • Ability to exert oneself physically for extended periods without tiring, including performing repetitive tasks.
  • Communicate information clearly and succinctly and engage in effective two-way communication.
  • Ability to determine the tools and equipment needed for a task.
  • Ability to judge relative distance and depth accurately.
  • Use logic and reasoning to assess alternative solutions, conclusions, or approaches to problems.
  • Understand how new information affects current and future problem-solving and decision-making.

Nice To Haves

  • OEM training and certifications are preferred.
  • ASE T2 (Diesel Engines) 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 A8 (Engine Performance) certification.
  • ASE L1 (Advanced Engine Performance Specialist) certification.
  • ASE L2 (Electronic Diesel Engine Diagnosis Specialist) certification.

Responsibilities

  • Perform scheduled preventative maintenance, DOT inspections, and follow-up repairs on light-, medium-, and heavy-duty vehicles in a mobile/field environment.
  • Perform minor adjustments and repairs on truck equipment and systems, including electrical, brake, cooling, starting/charging, engine, steering, transmission, clutch, and differential systems.
  • Diagnose, adjust, and repair truck equipment and systems, including air conditioning and engine electronics.
  • Inspect, test, and listen to defective equipment to diagnose malfunctions, using instruments such as handheld computers and pressure gauges.
  • Road-test vehicles to diagnose malfunctions and confirm proper operation.
  • Identify problems, assess information, and use sound judgment to evaluate alternatives.
  • Independently manage parts inventory and equipment on the company-issued service truck and perform periodic reconciliation.
  • Maintain and operate the company-issued service vehicle, including safety checks and pre- and post-trip inspections.
  • Work with clients and customers to assess needs, provide information or assistance, resolve problems, and meet expectations.
  • Manage concurrent tasks and prioritize work and time effectively.
  • Use hand tools, precision instruments, diesel tools, welding equipment, lifts, and jacks.
  • Document work to company standards and upload pictures of work, parts used, and findings to Repair Orders using the company-issued iOS device and TRAIT application.
  • Complete DOT forms and other documentation accurately and on time.
  • Work independently and manage a daily schedule.
  • Maintain productivity and work within or close to Standard Repair Times.
  • Obtain parts from approved local and national vendors as needed.
  • Communicate with management and support teams by email or phone to obtain repair estimate approvals, purchase order numbers, and discuss Repair Order findings.
  • Perform work in compliance with company safety, health, and environmental policies and applicable OSHA, EPA, and DOT regulations.

Benefits

  • Health, dental, and vision insurance beginning on the first day of employment.
  • 401(k) matching after 90 days: 100% match up to 6% contribution, plus an additional 2% discretionary company contribution.
  • Accrue up to 200 hours (five weeks) of paid time off based on tenure.
  • Tuition assistance or reimbursement.
  • Adoption and surrogacy assistance.
  • Pet insurance.
  • Company-paid volunteer hours.
  • Employee discounts on vehicle purchases, cellphone plans, ridesharing, home and rental insurance, and wellness and fitness incentives.
  • Weekly pay.
  • Safe-driving and technician-efficiency bonuses.
  • Safety boots and safety glasses reimbursement.
  • Extreme-weather gear for cold and hot conditions.
  • Uniforms provided, with laundry service where available.
  • Company service truck may be taken home daily.
  • Company-provided tablet and cellphone.
  • Technical training and a dedicated career path, with more than 50% of front-line managers promoted from within.
  • Employee resource and diversity groups.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service