Tesla Roadster

GPS Firmware Reprogramming

Since the summer of 2019, the Garmin GPS firmware has had a week number overflow firmware bug that causes the GPS to roll back to the year 2000.

Although this does not affect overall vehicle functionality, it does cause the timestamps in the log files and battery health logs to be recorded incorrectly leading to difficulty diagnosing faults.

Access to accurate log file information continuously being recorded in a Roadster is crucial in isolating faults, and establishing timelines for errors. It can also be useful in determining patterns and trend analysis for ESS Battery Pack condition and degradation.

For Roadsters in our Service Center, we developed a custom cable and are able to reprogram and update the Garmin firmware to resolve this software bug.

For remote vehicles, we suggest sending us the GPS module located under the driver’s side headlight and we can update the firmware in our lab. While out of the vehicle, the Roadster will function without this module, but it may affect any scheduled charging you have setup on your Roadster.

Tesla Service Center

Gruber Motor Company is an independent Electric Vehicle Service Center specializing in Tesla vehicles, with extensive experience in the diagnostics, repair, maintenance, and restoration of Tesla electric vehicles.

As electric vehicles continue to transform the automotive industry, servicing them requires a new kind of expertise. Today’s advanced EV service centers increasingly combine traditional automotive repair with the capabilities of an electronics and engineering laboratory. Gruber Motor Company brings decades of experience servicing critical power systems, high-voltage electronics, battery systems, and power conversion equipment—technologies that share many of the same fundamentals found in modern electric vehicles.

Operating from our 18,000-square-foot service facility in Phoenix, Arizona, our engineers and technicians provide advanced EV diagnostics and repair while maintaining the personalized customer service of a traditional specialty automotive shop. We are particularly known for our expertise with the original Tesla Roadster, including battery systems, power electronics, diagnostics, component repair, restoration, and vehicle preservation.

In addition to specialized Tesla and EV services, Gruber Motor Company provides complete automotive support, including tires, brakes, suspension service, detailing, paint correction, powder coating, paint protection film (clear bra), cosmetic restoration, and vehicle upgrades.

Whether your Tesla requires routine maintenance, advanced electrical diagnostics, battery or power-electronics repair, or a comprehensive restoration, our goal is simple: provide knowledgeable service, clear communication, and solutions that keep these pioneering electric vehicles on the road.

We are proud of our EV Service Center of the Future

Our EV Lab is where Software and Electronics repairs take place

Gruber Motor Company
203 West Lone Cactus
Phoenix, Arizona 85027
EV@GRUBER>COM

602-863-2655 X500

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