Odd battery issue while driving?!
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MBWorld Fanatic!
Joined: Aug 2015
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From: DC Metro Area
2007 Mercedes E550
Odd battery issue while driving?!
Hope you guys can help me out with this one. Started my car today and battery was full voltage. Drove about 5 minutes and suddenly radio turns off, as well as AC, and I got the "convenience features temporarily unavailable" indicating low battery.
How could my battery drop like that? Is that necessarily a bad alternator? My plan is to monitor voltage on the dash next time I drive; I had to park my mercedes and take the civic on my road trip. And of course my I heard about it the whole trip from my wife...
Aside from alternator, could it be something else. Note I believe I have had a parasitic battery issue lately, and my battery voltage has been going up to 14.2v while driving??
How could my battery drop like that? Is that necessarily a bad alternator? My plan is to monitor voltage on the dash next time I drive; I had to park my mercedes and take the civic on my road trip. And of course my I heard about it the whole trip from my wife...
Aside from alternator, could it be something else. Note I believe I have had a parasitic battery issue lately, and my battery voltage has been going up to 14.2v while driving??
MBWorld Fanatic!
Joined: Jan 2009
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From: V E G A S
1922 Ford Model T / no OBD
The system is crazy oversensitive and lot of things can trigger such message.
I had it for a week during my vacation, when ScanGauge was always showing close to 14V in the car.
Only full inspection back home found that the battery clamp did not have bolt torqued enough
I had it for a week during my vacation, when ScanGauge was always showing close to 14V in the car.
Only full inspection back home found that the battery clamp did not have bolt torqued enough
Thread Starter
MBWorld Fanatic!
Joined: Aug 2015
Posts: 1,059
Likes: 73
From: DC Metro Area
2007 Mercedes E550
I see, and actually I do have a bunch of aftermarket stuff connected to my battery. How "loose" were your battery terminal connection bolts that caused your issue?
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
If the quality of the connection to the battery causes even only a volt or two to be lost, your car won't like it. Clean and tight enough so you can't move anything by hand. Did I mention clean? A clean connection is a happy connection. A loose connection will arc and get dirty quickly.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Getting cabin fan going off at 100F is hard to bear.
