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· *Registered
2015 SLK250
Joined
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21 Posts
Discussion Starter · #1 ·
I have noticed for a while now that my start function has been acting weird. When I do my routine to start the car break, press button etc, everything turns on and the needles in the speedometer and tachometer move from zero to the other end but the engine won't start. So I take my finger off the button and foot off the break and do it a second time, recently even a third time and then it starts normally.

Any idea what could be happening here? Thank you in advance for any assistance on the issue.

Jay
 

· Founding Member 2006
Joined
·
116,071 Posts
my 2 cents.. how old is car battery?
 

· *Registered
2015 SLK250
Joined
·
21 Posts
Discussion Starter · #3 ·
my 2 cents.. how old is car battery?
I don't know, it came with the car when I bought it a year ago. I had thought about this, it's great that I am getting confirmation on my suspicions. I understand that this car has two batteries? Should I change both? or the main one. Any recommendation as to brand from experience? Also is there a diagram, I am not that familiar but would try to switch myself. Thank you for your help.
 

· Founding Member 2006
Joined
·
116,071 Posts
just the main one should do it... r172 owners will jump in

get it comprehensively tested at autozone, etc for free

is there a date sticker on it?
 

· Founding Member 2006
Joined
·
116,071 Posts

· Founding Member 2006
Joined
·
116,071 Posts

· Founding Member 2006
Joined
·
116,071 Posts

· Founding Member 2006
Joined
·
116,071 Posts
 

· Founding Member 2006
Joined
·
116,071 Posts
 
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