[gr92056]

I got an SRS malfunction error last week and was planning to replace the sensor as soon as possible. However, 2 nights ago when my wife was driving the car, the lights started flashing (inside and out), the wipers came on, high beam indicator flashed, and she said there were 4 malfunctions on the instrument cluster (couldn't remember what they were). She pulled over and shut down. When she restarted the malfunctions were gone (except SRS) and everything was back to normal. Where do I even start to trouble shoot this?

In the past 6 weeks, I have replaced the battery, alternator (6 weeks ago), water pump, thermostat, belt tensioner, idler bearing, and belt.

Battery reads 12.58 (drops to around 11.5 when starting)
Alternator charging at 14.7 when running

 

[Noobie23]

Everything seems to go at once

 

[gr92056]

Everything seems to go at once

The alternator did quit on me, but I did the rest because the water pump and pulleys just seemed a little noisy and I wanted to avoid failure. It did quiet down with the new parts.

 

[300DFan]

It the battery and alternator are good I'd suspect a bad ground somewhere. A lot of the electronics are very sensitive to low voltage and a poor ground connection has the same effect as a bad battery or alternator. Ultimately the voltage delivered to the components can still be too low.