Posts Tagged: Service battery charging system message

Service battery charging system message

July 24, 2012

Diagnose and fix a service battery charging system message Service battery charging system message, generator light on, alternator light on, not charging, what does Service battery charging system mean? In the old days all cars has a generator and a voltage regulator. Then car makers switch to an alternator and voltage regulator. When solid state came along, car makers started building the voltage regulator into the alternator. Then they decided to let the ECM take over the job of regulating alternator output. Now we’ve entered a whole new realm of … Read More