I have a Mazda5 AT, light comes on then all warning lights come on. Speed and tachometer quits working. You turn off the car and it won’t start unless you jump it or let set a while. Battery is fine, alternator fine, not sure what’s up. It’s a 2010 with 80k miles on it, fluid level good.
Yeah check the ground connection especially the one to the starter. If you let the bad contact to continue on, then the front CV joints will go next because the electricity is going to go through anywhere it finds conducting material and the bearings in CV joints have the minimal conducting surface but large metal parts on both ends which translates into bearings get worn faster when more-than-expected current runs through them.