Electrical Problems? Need some insight.
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Junior Member
Joined: Oct 2019
Posts: 21
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2013 GLK350 4-Matic
Electrical Problems? Need some insight.
2013 GLK 350 4Matic
Original batteries (i guess seems relevant).
Rarely the traction control off light will come on and the acceleration loses some power, returns to normal upon killing engine and restarting. Only once has the acceleration not powered when sitting at light with ECO mode on, so when the engine shut off for a moment, upon releasing my foot off the brake to continue driving. After a second power kicked on again and off I went.
Is this related to the batteries? Should I have the main and aux battery replaced? Or does seem like something more/different?
Thank you
Original batteries (i guess seems relevant).
Rarely the traction control off light will come on and the acceleration loses some power, returns to normal upon killing engine and restarting. Only once has the acceleration not powered when sitting at light with ECO mode on, so when the engine shut off for a moment, upon releasing my foot off the brake to continue driving. After a second power kicked on again and off I went.
Is this related to the batteries? Should I have the main and aux battery replaced? Or does seem like something more/different?
Thank you
Member
Joined: Aug 2015
Posts: 113
Likes: 25
From: Washington State
2013 GLK 350 4Matic
I wouldn't replace your batteries without checking them first. I have a 2013 and the main battery lasted a little over 5 years, but I still have the original Aux battery and it tests fine. That said, if you are having flaky problems, do have both batteries checked. Battery life depends a lot on how you drive and how many cycles you put on the battery. Most comercial testers today measure the internal impedance of the battery and can be pretty accurate about the state of the battery and even how long it will last.
One thing to keep in mind on any modern car is they all draw some current amount of current when they are sitting with the engine off. This will eventually drain the battery. The best thing you can do for your batteries is keep them from being drained too low. If my car sits for more than a couple of days, I use a good quality trickle charger to keep it topped off. I use a CTEK charger that has very low ripple so it won't screw up the car's electronics while it's keeping the battery up. That counteracts the drain from the cars electronics.
One thing to keep in mind on any modern car is they all draw some current amount of current when they are sitting with the engine off. This will eventually drain the battery. The best thing you can do for your batteries is keep them from being drained too low. If my car sits for more than a couple of days, I use a good quality trickle charger to keep it topped off. I use a CTEK charger that has very low ripple so it won't screw up the car's electronics while it's keeping the battery up. That counteracts the drain from the cars electronics.
