GLK 350 hard start
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MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,562
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From: Austin, TX
2006 E55, 2012 GLK350 & 1992 190e sportline
GLK 350 hard start
Hi All,
Bought a glk350 and it has a very slow crank. It always starts but very slowly. I replaced the battery and recently left the car sitting for 10 days. came back and it started like it normally does (slowly) but it started. I am guess since that is the case the battery is not loosing power. I am guessing the starter is getting old but dont want to swap it on a theory. Any other things i should be looking at?
Bought a glk350 and it has a very slow crank. It always starts but very slowly. I replaced the battery and recently left the car sitting for 10 days. came back and it started like it normally does (slowly) but it started. I am guess since that is the case the battery is not loosing power. I am guessing the starter is getting old but dont want to swap it on a theory. Any other things i should be looking at?
MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
First, have the battery tested for capacity. Then, verify you do not have a big voltage drop between the battery (+) and the starter or the battery (-) and the engine block. If that doesn't expose anything, you can do a draw test on the starter motor. If it's bad it'll draw excess current. If it doesn't draw a lot, and still cranks slowly, repeat the voltage drop tests.
MBWorld Fanatic!
Joined: Sep 2015
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Likes: 343
2013 glk 350
Yes you need the battery properly tested, If you have a volt meter testing voltage now and test it with someone cranking the motor, the amount of voltage drop will be a good idea of the issue. What brand , capacity and type of battery did you put in.
