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1990 964 Warning Lights within Gauges

Electrical and Electronic

Vehicle Information: Year: 1990; Body Type: Coupe; Engine (type, size, modifications): 3.6 air-cooled; Total Mileage: 90000;

I'm distraught and disappointed with the dealership I had my car serviced in. They're supposed to maintain my car, not cause problems.After a 30K service interval, the car runs fine except that the "idiot lights" or warning lights in the dash/gauges would intermittently flash on including a warning beeping tone. These lights and beeping tone would go on if I do hard breaking, hard acceleration, or hit bumps. Only way to solve this is to kill the car and restart. Even the "!" button to reset does not work to kill the lights and beeping tone. This may have started when I asked them to check my cold air blower since it squeeks. Do you think they may have poorly reconnected an electrical connector in the blower vicinity, or dropped a conductive material in the same area that grounds the circuitry of these idiot lights? The lights that go on (and stay on) are as follows: Low fuel light, low windshield washer reservoir light, brk light, prkng brk light, oil light, "(O)" light -looks like drum brake pads, rear wing light, and fan belt light. I assume these lights share the same electronic module, where can I find this or is this a bigger problem?

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