Dynamic Drive malfunction - 5Series.net - Forums


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Old 05-18-2017, 08:56 AM   #1
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Default Dynamic Drive malfunction

Hello,
I have a 2004 E60 530i with the dreaded Dynamic Drive fault that pops up from time to time. It seems to only come up if I'm sitting still idling. I just bought a new big AGM battery for the car and the alternator puts out a steady 14VDC when it's idling. (I have a digital volt meter plugged into the cigarette lighter. )The car only has 30,000 miles on it and it's been a problem on and off for years now. Every day this week, I have been going through drive thru's for lunch and eating while parked. After 5 minutes of sitting there idling with the air on, the DD fault comes up. My thought at first was that the voltage is dropping causing the error but it holds steady while idling.
The car seems to handle fine whether the fault is on or not.

Any ideas what could be causing this?

Thanks much!
Randy
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Old 05-18-2017, 07:00 PM   #2
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Have you read the codes for the DD malfunction?
When was the last time you changed the CHF fluid?
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Old 05-22-2017, 07:22 AM   #3
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I changed the CHF power steering fluid about 10,000 miles ago even though the car only had 20,000 miles on it at the time. After that, the DD malfunction error still came up once in a while. I looked at the codes a million times by I don't remember what they were in regards to the DD. Next time it happens, I'll see what the codes are.
I cleared the codes last Friday and went into the testing modes for DD. The car rocked back and forth in the test as it should and everything passed.
I drove it yesterday and today without any errors yet. I'll see what happens when I'm sitting in the car idling for 15 minutes. That's when the DD fault comes up lately.
Like I mentioned, I just got a new battery and I replaced the voltage regulator last year thinking that was the problem. It's strange because it's intermittent. Sometimes there's no DD error for months. Lately, it's every day when I'm idling. It doesn't seem to affect how it drives but it's certainly annoying.
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Old 05-22-2017, 11:21 AM   #4
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Sure enough, Dynamic Driving Fault came up again after 5 minutes of sitting idling.I turned the car off and waited 15 minutes and the error was gone. It only comes up when I'm not moving.
Next, I'll hook it up to the laptop to see what error code comes up.
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