AL0826N
Battery/Alternator Light: Voltage Regulator or Alternator
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Joined: Nov 2015
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2004 E55 AMG
Battery/Alternator Light: Voltage Regulator or Alternator
Hi guys,
So I had the Battery/Alternator Visit Workshop light come on while I was driving the other day. I replaced the voltage regulator and the battery. At idle the voltage sits at 12.12 and the red battery light stays on. I ran the car for 30 min without any issues but the voltage stays the same and the battery light stays on. Voltage increases to 12.35 when the car is shut off.
Could it just be that the alternator itself is bad? What do you guys think. I've read that it's usually the VR but the fact that the voltage is still low while running makes me think it's the alternator.
BTW here is a link to the part I ordered: http://www.rmeuropean.com/Products/0...506-MFG14.aspx
So I had the Battery/Alternator Visit Workshop light come on while I was driving the other day. I replaced the voltage regulator and the battery. At idle the voltage sits at 12.12 and the red battery light stays on. I ran the car for 30 min without any issues but the voltage stays the same and the battery light stays on. Voltage increases to 12.35 when the car is shut off.
Could it just be that the alternator itself is bad? What do you guys think. I've read that it's usually the VR but the fact that the voltage is still low while running makes me think it's the alternator.
BTW here is a link to the part I ordered: http://www.rmeuropean.com/Products/0...506-MFG14.aspx
Thread Starter
Member
Joined: Nov 2015
Posts: 109
Likes: 9
2004 E55 AMG
What's odd is that before I replaced the VR, the car would shut off and wouldn't start at all. Now it actually runs (with low voltage). I would have expected the battery die by now if the alternator wasn't charging.
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2006 AMG E55
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2004 E55 AMG
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2006 AMG E55
Yep that's where I got mine!!
