Semi-Truck Instrument Cluster Power Failure and Repair | UpFix

Why Is My Semi-Truck Instrument Cluster Dead or Flickering?

When the entire instrument cluster goes dark or behaves erratically, it’s not just inconvenient—it’s dangerous. Drivers rely on gauges for speed, RPM, temperature, and warnings. A dead or flickering cluster can make operation guesswork.

Instrument clusters in semi-trucks endure constant vibration, heat, and voltage fluctuations. These stress factors eventually cause microcracks in solder joints or failure in the cluster’s voltage regulators and capacitors. Once that happens, power drops intermittently or dies completely.

Common Signs of Cluster Failure

• Entire cluster dead or intermittently flickering

• Backlight or illumination not working

• Gauges reset or freeze while driving

• Warning chimes or lights misbehaving

If you’ve checked fuses and power supply and the issue persists, the internal logic board or stepper motors are likely at fault.

Why Repairing Is Better

Replacing a semi-truck cluster is costly and often requires reprogramming for VIN, mileage, and settings. A new unit from the dealer may exceed $1,500, and used ones don’t always communicate properly with your truck.

UpFix repairs your existing cluster, preserving all factory data. Every repair includes full testing of power, signal, and illumination circuits.

UpFix Repair Process

1. Diagnostic testing for voltage and signal stability

2. Replacement of failed voltage regulators and capacitors

3. Testing of stepper motors and backlight circuits

4. Full bench simulation to confirm stable operation

Supported Brands

Freightliner, Peterbilt, Kenworth, Volvo, International, Mack and others.

Get your truck back on the road and keep your costs low.
Send your part to UpFix for professional testing and repair.
We’ll restore it to like-new condition, save you up to 80% compared to buying new, and make it plug-and-play ready when returned.