2013 CX-5 Won't Start...What could be wrong?

[juscrzn]

2013 CX5 just died.. All of a sudden my CX5 will not start. things I have tried/noticed; battery, when connected only reads about half charge, however when i disconnect and put it on a charger, it shows full charge. when connected, momentarily I get all the dashboard lights, then nothing. All I did prior to this weird event was take out the cabin air and engine air filters and clean them. I made sure that the engine air filter was properly seated too, prior experience, I have checked all the fuses and they seem to be OK. What in the dog hair could be wrong, I'm at wits end on this one. There has to be a simple answer to this dilemma...
Sid

 

[shooter357]

Sounds like a short has developed. Check and see if you cut a wire in the area you were working by mistake. If you have a meter see if there's a short between the positive battery cable and ground.

 

[Mazdiod2]

Retrace your steps.... More history and information about the CX5 might help. You're sure the battery is ok, and it's not dying from heat? A bad battery can show a charge but it's not 'real'. But you could have introduced a short someplace when you replaced the filters.

 

[ceric]

I still think your battery is bad.
"put it on a charger, it shows full charge".... you probably saw the voltage from the charger.

Disconnect the battery and use the multimeter ($10 from Walmart) to measure the voltage.
It should read 12.6v (no less than 12.3v).
(2.1v * 6 = 12.6 v)
There are 6 cells in a lead-acid battery.