7Akamplisher

I have a 2010 GLK350 4matic and out of the blue it would not start. I pulled the front prefuse box and discovered there was some lack of continuity. Since I’m not an electrician, soldering a fuse back together is not an option. I was wondering what the parts with the arrows are called? Or if I completely replace the box, which part number goes with my vehicle.
A 204 540 39 50 or A 204 540 35 50. Thanks in advance for any help with this.

Mmr1

How old is the battery

7Akamplisher

The battery was replaced at the dealership in May 2015.

Mmr1

So it turns over fast? I think that’s the last thing I’d do, what your doing. First I’d be sure it’s getting fuel and spark.

7Akamplisher

When I turn the key it the ignition It won’t even crank. The dashboard lights up, but the radio and windows don’t work.

Mmr1

What’s the battery voltage ? I would think low voltage, or a bad connection off the battery or ground. Or corrosion. Or a bad battery . 12.5 -12.8 is a charged battery. Check voltage at battery and off the fuse panel.

Mmr1

If you have Echo stop -start , you have a second battery above the spare tire, I have no idea if it would make a difference if it’s bad

NYCGLK

2010 most likely doesn't start/stop.

NYCGLK

I would check the battery first. Have you tried getting a jump or using a jump starter?