
Microheat Inc., the company responsible for inventing and supplying General Motors with their HotSpot windshield cleaning system, has filed for Chapter 11 bankruptcy protection. The technology utilized heated liquid to clean the front glass of debris, ice, and snow. Unfortunately, a short circuit on a printed circuit board could overheat and lead to a fire (removing contaminants from much more than just the front windshield). As a result, GM recalled 944,000 vehicles and dropped Microheat, and their HotSpot product, from the lineup. Even with the system no longer offered on vehicles, things are cooking in court as GM is now seeking $20-25 million in damages to cover the cost of the recall. Without the assets to cover the charges, bankruptcy protection could only be expected. While GM's HotSpot recall solves the overheating problem with a simple inline fuse, the new filing by Microheat only seems to be fueling the fire.

General Motors has nixed an optional hot-spray windshield washer system called HotShot from all of its cars and trucks after an electrical short in the systems caused the recall of 944,000 vehicles. GM told the National Highway Traffic Safety Administration that a short on the circuit board of the fluid heater could overheat the control-circuit ground wire. The problem has resulted in 34 warranty claims so far and three reports of fires may have been caused by the system. To fix the problem, dealers will add a wiring harness with an inline fuse, and all GM retail outlets should have the required parts to fix the problem free of charge by November 1. Vehicles affected include the Buick Lucerne and Enclave, the Cadillac DTS and Escalade, the GMC Yukon, Sierra and Acadia, the Saturn Outlook, the Hummer H2, and the Chevy Silverado, Avalanche, Tahoe, and Suburban. GM blames the system's suburban Detroit supplier, Microheat, for the problem, and the small company has reportedly shrunk in size in preparation of forever closing its doors. The General wants Microheat to pay for the recall, which is estimated to cost between $20 and $25 million, and the small supplier has countered by reminding the automaker that it's still owed $3.7 million for parts and tooling. The whole affair is a shame, as heated windshield washer fluid is a nice luxury that makes de-icing and de-bugging your windshield a hands-off affair. As far as we know, Microheat is the only supplier offering this technology, so when it goes, so does the option altogether.


In the ongoing quest to make our cars more user-friendly, automakers have been adding more and more techno-goodies to make our lives just a bit easier, as well. Unfortunately, these features occasionally do the exact opposite as electrical gremlins take control and make them malfunction. Such is the case with a 857,735 vehicles from General Motors built between 2006 and 2008 that are equipped with heated windshield washer fluid. Apparently, the system is liable to short out, causing it to stop working and even smoke, give off an odor, and make other on-board electronic systems go haywire. To remedy the problem, dealers will add a new wiring harness with an in-line fuse, which will short out before the problematic printed electrical circuit does the same. We've pasted a list of all the affected vehicles after the break.



