Electrical Diagnosis & Repair

Truck Maintenance is a Necessary Principle and Timely Supervision of the Truck by a Professional is the First Thing to Do.

Electrical Diagnosis & Repair For Commercial Vehicles

When it comes to electrical diagnosis and repair services for commercial vehicles, Red Dot Truck Service is second to none! Located in Mahwah, NJ, Red Dot Truck Service has been a trusted provider of electrical services for many years. From diagnosing sophisticated electronic systems to repairing complex wiring harnesses and components, Red Dot has the experience and knowledge to get your vehicle back on the road quickly and safely.

At Red Dot Truck Service, we use state-of-the-art tools and equipment to diagnose commercial vehicle electrical issues quickly and accurately. After locating the source of the problem, we work hard to find cost-effective solutions that won’t break your budget. We also use high-quality parts from trusted suppliers, so you know you’re getting quality repairs every time.

Common Electrical Issues With Automobiles


If your car doesn’t start, it could be a battery issue. The first thing you should check is the connections and make sure they are secure. You should also check the charge level in the battery with a voltmeter or multimeter. If all else fails, you may need to replace the battery altogether. 


The starter can be another common issue with automobiles if worn out or broken down. When this happens, your car won’t turn over when you try to start it up. To determine if this is the problem, check for any loose wires near the starter motor and ensure everything is connected properly. Before replacing it, you may also want to test for any voltage drops on the starter circuit with a multimeter. 


An alternator issue can be difficult to diagnose due to its complexity. One way to tell if there’s an alternator problem is by checking your vehicle’s charging system voltage. If there’s too little or too much voltage from your alternator, then an issue might need to be addressed immediately. Listen for strange noises from under the hood while your vehicle runs, as these could also point towards a faulty alternator. 


Another common electrical issue in automobiles is related to fuse boxes which control power distribution throughout different components of your vehicle, such as headlights, radio systems, etcetera. 

Over time, fuses can become worn out or blown due to excessive current drawn from other components in the system. Hence, it’s important to inspect them regularly and replace them when necessary. 

Additionally, if there’s no power coming from certain components of your vehicle, ensure that all fuses are securely inserted into their sockets and not blown out before attempting any major repairs on those components themselves!  

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Expertise You Can Rely On For Electrical Diagnosis & Repair Services

No matter what type or size of commercial vehicle you have, Red Dot has the experience and expertise to diagnose any electrical issue efficiently and accurately. We specialize in all types of heavy to medium-duty trucks. 

Whether you need an engine control module replaced or a wiring harness repaired on a medium-duty truck, we are here to help! Our technicians have decades of combined experience working with these commercial vehicles, allowing us to provide superior service at competitive prices. We also offer preventative maintenance services, which can help keep your vehicles running smoothly for years to come. 

If you require assistance with any type of electrical system service on your large or small commercial vehicle, don’t hesitate to contact Red Dot Truck Service! Our experienced technicians are available so you can receive prompt assistance when needed most. 

Stuck With a Truck Breakdown? Contact Us Today

We strive to go beyond the typical expectations of vehicle care, offering a comprehensive suite of services emphasizing top-notch quality and customer satisfaction. 

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Frequently Asked Questions About Truck Repair Services

If you have unanswered questions, don't hesitate to reach out! Our team is here to provide answers and help in any way that we can.

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Regular truck servicing is essential for keeping your truck running smoothly and efficiently in terms of safety and performance. How often you should have your vehicle serviced depends on the truck's make and model and how you use it. More frequent truck service periods may be recommended if your truck is used heavily.
Regular truck maintenance is essential for proper functionality and safety. A few key signs to look out for may indicate your truck needs servicing. If you notice any strange noises from the truck, this could mean an engine problem.
Oil leaks and coolant spills are important signs that your truck requires maintenance. Brakes grinding, smoke coming out of the tailpipe, or vibrating while accelerating are warning signs that professional assistance is necessary. Proactive truck maintenance is typically the most cost-effective way to keep running strong and safely.
Truck repair and maintenance is an important part of truck ownership, as it helps keep your truck in the best condition possible. Services included in truck repair and maintenance range from basic tune-ups to more specific services such as tire rotations, brake repairs, and oil changes.

Regular truck check-ups help identify potential problems so they can be solved on time, preventing further damage or other truck issues from occurring. For truck owners who want to save on trips to the mechanic, there are plenty of do-it-yourself truck repair and maintenance tips available online for simple tasks such as checking fluid levels and cleaning air filters.
Preventing truck repair is something that all truck owners must be aware of to keep their vehicles in the best working shape. Regular truck servicing and maintenance can help with truck repair prevention, as any worn parts or minor issues can be caught early and fixed before they become more costly.

Also, ensuring your truck has the right amount of oil, coolant, and other fluids will extend its life. Furthermore, truck drivers should be mindful not to overload the truck bed and observe all recommended loading weight guidelines set by their manufacturer to avoid overstressing key components that could result in repairs later on down the road.

Taking care of a truck is an investment. Therefore, taking some precautionary steps may make all the difference in saving money on repairs!