f360 susp error

My friend's modena just rebuilt on last week.we take the vehicle from carshop was okey.but 3 days later the susp light on ...I want to know how's check the error by myself.because the carshop so far from me.....
The susp was okey.I drived on road already that feel everything okey...

 

Thanks man..I'll check the battery on tomorrow frist.....seens 3-4 days don't start the engine of my friend....