Funny electrical problems?
Thread Starter
Member
Joined: Jun 2007
Posts: 109
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From: Ohio
03 ML500
Funny electrical problems?
So I have a 260E, when the car is idling, and I have my door open, the dome light dims, this is very noticeable in the dark. If headlights are on, does the same thing. It does this until I rev up the engine. No matter if I have every accessory off or on, it still does this. I just replaced the OVP to fix other problems, but this still persists. I took the car up to Auto Zone to have them test the battery and charging, they said that it was good. I wasn't sure if the voltage regulator would be causing a problem or something else?
Thanks for any help,
Craig
Thanks for any help,
Craig
Thread Starter
Member
Joined: Jun 2007
Posts: 109
Likes: 0
From: Ohio
03 ML500
Also, I went to AutoZone and Advance Auto Parts, both tested that my alternator was kicking out 51amps of power. At AutoZone, they said to replace it, and at Advance Auto Parts, they said it should be fine...so I don't know exactly what to do. Car seems to be running fine, besides the dimming (and cruise)
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MBWorld Fanatic!
Joined: Jul 2005
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From: Boston
is a German Tank
Here's what you do
1. Turn the car on
2. discconect battery cables while car is on
3. If it dies, then buy a new alternator, if it doesnt try voltage regulator and go from there.
do you have a "el CHEAPO" battery? Could also play a role.
1. Turn the car on
2. discconect battery cables while car is on
3. If it dies, then buy a new alternator, if it doesnt try voltage regulator and go from there.
do you have a "el CHEAPO" battery? Could also play a role.
Thread Starter
Member
Joined: Jun 2007
Posts: 109
Likes: 0
From: Ohio
03 ML500
also, I just ran a power test across the battery, and at 2000 rpms, the votage was at 14.1 volts....so does this rule out the possibility of the voltage regulator being faulty?
Thanks for you help!
Thanks for you help!
MBWorld Fanatic!
Joined: Dec 2006
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From: Bellevue, NE
1995 E320 SE, 162,000 Miles (Sold) 2007 CLK350 Cabriolet 2014 ML550
and that what you're paying for is the warranty. Most conventional automotive batteries in moderate environments last about 4 years. In tropical climates they last about 1-2 years.
MBWorld Fanatic!
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From: Boston
is a German Tank
I thought the same exact thing, till my 130 dollar battery from Autozone died 4 months into purchase, TWICE!
MBWorld Fanatic!
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From: Boston
is a German Tank
How does your lower Alternator harness look? Is it in good shape? Mine was crapped out and was causing all sorts of electircal problems (radio staying on all night, conrer lights staying on without me leaving them on ETC ETC...)
??
??
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,042
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From: Bellevue, NE
1995 E320 SE, 162,000 Miles (Sold) 2007 CLK350 Cabriolet 2014 ML550
Did you replace anything yet? If it were me, I'd replace the alternator or just drive it until it goes out completely. Then it will be easier to troubleshoot.
