2013 E550 (88k miles) Battery Drain issue
09-20-2022, 05:28 PM
#1
Newbie
Thread Starter
2013 E550 (88k miles) Battery Drain issue
Hi Team,
I've read through the forms but wondering what would be the best course of action to determine what kind of issues I should asker the dealership to look for.
For the last 2 weeks or so I've noticed the car having more and more trouble turning over at start. Sounded like a low battery issue, but the car would still start...until today.
Also, I noticed the last 3 to 5 times I started the car that the AC/Heat system would do a weird cycle through all of the venting modes (like foot-well only, then windsheild only, then all 3, then the normal summer AC setting to just dash vents....also seemed to always start in Heat instead of AC, but once cycled it would blow AC like normal)
Wondering if anybody else has had similar issues.
Thanks,
W.
I've read through the forms but wondering what would be the best course of action to determine what kind of issues I should asker the dealership to look for.
For the last 2 weeks or so I've noticed the car having more and more trouble turning over at start. Sounded like a low battery issue, but the car would still start...until today.
Also, I noticed the last 3 to 5 times I started the car that the AC/Heat system would do a weird cycle through all of the venting modes (like foot-well only, then windsheild only, then all 3, then the normal summer AC setting to just dash vents....also seemed to always start in Heat instead of AC, but once cycled it would blow AC like normal)
Wondering if anybody else has had similar issues.
Thanks,
W.
09-20-2022, 05:37 PM
#2
Senior Member
You didn't say how old your batteries are but it sounds like it might be replacement time. Load-test the batteries. Weird things when battery voltage is low.
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09-20-2022, 06:47 PM
#3
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MY'14 W212 M276 3.5NA @60kMi
Your car is getting more difficult to start...
> Start with a full charge cycle to see what difference it does with the starter cranking speed.
> Measure running voltage to witness a positive charge.
- bad old battery,
- SAM's drain,
- bad alternator or
- half-bad starter brushes ???
> Start with a full charge cycle to see what difference it does with the starter cranking speed.
> Measure running voltage to witness a positive charge.
Last edited by CaliBenzDriver; 09-20-2022 at 06:49 PM.
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09-20-2022, 06:50 PM
#4
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Goodness, I'm such a fool. You are 100% correct, it was a bad battery. What felt like "a year or two ago" was actually 3y9months. lol, getting a new battery tonight.
Thanks for your help.
Thanks for your help.
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09-20-2022, 06:54 PM
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MY'14 W212 M276 3.5NA @60kMi
09-20-2022, 07:02 PM
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I'm just glad it was the battery and not something else.
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09-20-2022, 07:21 PM
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MY'14 W212 M276 3.5NA @60kMi
(90A swings)
I've had it since 8/2017. I've only replaced the battery once before, about 3.75 years ago. When I replaced it (with a Duralast Gold series) it wasn't having issues yet, but, I was replacing the battery in my other 2013 car (Odyssey) and figured I might as do both in one swoop.
I'm just glad it was the battery and not something else.
I'm just glad it was the battery and not something else.
A new battery every 6 years is an easy way to keep things in good repair.
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