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Common Mack Truck Rental Issues: Self-Help Guide for Drivers

Overview If you’re experiencing problems with your Mack Truck rental, this guide will help you identify the issue, take first troubleshooting steps, and know when to contact Premier Truck Sales & Rental.

1. Prepare Before You Call

Before contacting support, please have these details handy:

  • Your name and (company name, if applicable)
  • The truck’s unit or rental ID
  • Your current location (or where the truck is parked)
  • A description of the issue you’re experiencing

2. What Problem Are You Experiencing?

Below are the most common issues drivers see with Mack Truck rentals, with tips you can try before calling for help. Please select the one that best matches your situation:

  • My truck won’t start
  • I see warning lights on the dashboard (check engine, DEF, ABS, etc.)
  • The truck feels like it’s losing power
  • I’m having problems with the brakes
  • The transmission or shifter is acting up
  • There’s an electrical issue (battery, lights, dash)
  • I see or smell a fluid leak
  • Issues with tires or suspension
  • Something else (describe as much as you can when you call)

3. Troubleshooting: Step-by-Step Solutions

Truck Won’t Start

  • Check if any warning lights or messages are showing on the dash.
  • Listen for unusual sounds (clicking, no turnover, etc.).
  • Make sure the truck has fuel and all switches are in the correct “on” position.
  • If safe to do so, check that the battery cables are tight.
  • If the truck still won’t start: Note any messages on the dash and call support.

Warning Lights (Check Engine, DEF, ABS, etc.)

  • Which warning lights are on? (Write down exactly what you see.)
  • If you see a DEF (Diesel Exhaust Fluid) warning: check the DEF fluid level and refill if low, per your manual.
  • If the check engine or brake light comes on, or any red safety light: Stop driving as soon as it is safe and call our support team for instructions.

Brake Issues

  • Listen for air hissing, warning beeps, or see any dashboard alerts.
  • If the brakes feel spongy or “go to the floor”: Do not drive the truck. Call for immediate assistance.
  • Never ignore brake warnings—safety comes first.

Loss of Power or Performance

  • When did this start—while starting, accelerating, or at highway speed?
  • Are there other symptoms (smoke, shakes, strange smells)?
  • If the truck is not safe to drive or can’t maintain speed, pull over and call for roadside support.

Electrical Issues

  • Which system is affected (headlights, dash, inside lights, starting)?
  • If you are comfortable, check if any fuses appear loose inside the driverside fuse box.
  • For battery trouble, check for corrosion or loose wires at the battery (if safe to access).
  • Unresolved? Note the symptoms and call our support team.

Fluid Leaks

  • Where do you see fluid collecting—under engine, wheels, or elsewhere?
  • What color/odor does the fluid have? (Oily, sweet, or fuel smell)
  • Severe leak or brake/fuel leak: Do not drive. Call for assistance immediately.

Transmission/Shifting Issues

  • Does the problem happen in every gear or only certain ones?
  • If the truck will not move or there are clunks/grinding noises, stop driving and contact support.

4. When to Call for Help

Call [Your Company] support line:

  • If these steps do not resolve your issue
  • If you see any safety-related warnings
  • If you feel unsure about operating the truck safely

We are here to help you 24/7. Please have your information ready for faster service.

5. What Happens Next?

Depending on your issue, our support team will:

  • Attempt to solve the problem over the phone
  • Dispatch roadside assistance if needed
  • Schedule service at the nearest partner shop
  • Provide a replacement truck or alternative solution

You’ll be kept updated with next steps and estimated wait times. If you’re waiting for assistance, stay with your truck if it’s safe, and keep your phone handy for updates.

Extra Tips

  • Never drive a vehicle if you are unsure it is safe.
  • Always call if you see major warnings or feel your safety is at risk.
  • For any “unknown” issues, take a picture of your dashboard or the problem—this can help us serve you faster!

If you have further questions, check your Mack Truck rental manual in the glove box, or call our support line. Your safety and satisfaction are our top priorities!