I was told today that my 08 C300's battery was only performing at 220 cold cranking amps when it should be at 600 cca's.

My question is, shouldnt I be getting a warning light of some type letting me know that the battery is failing?

Thanks,
John

 

you get light if alternator is not charging enough or so but not for bad battery

 

Is a battery something that would be covered under the original manufacturers warranty? The car is only 2 years old and only 40,000 miles.

 

it should be covered