Only occasional 12-volt chargers cause a problem. Scosche ones seem particularly bad; Ankers so far haven't shown any problems. In addition, if you have added any kind of power supply for extra lighting, for engine management, etc., they can cause the same problems. I was responsible for at least one old thread on this subject. Nothing fixes it if you have the problem. If you get a new charger, it virtually always will solve the problem (and if it doesn't, just go find another charger until the problem goes away).
The problem also comes up occasionally with relays. I ran into it in two trucks where the relay actuating the windshield wipers would throw a TPMS Fault code every time the wipers were turned on. Replaced the relay and the problem went away. The TPMS have standardized wavelengths, code protocols, and so on, so they work with most vehicles. You can't make a change at the TPMS that will do anything.
The problem also comes up occasionally with relays. I ran into it in two trucks where the relay actuating the windshield wipers would throw a TPMS Fault code every time the wipers were turned on. Replaced the relay and the problem went away. The TPMS have standardized wavelengths, code protocols, and so on, so they work with most vehicles. You can't make a change at the TPMS that will do anything.
