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#11
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
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#12
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Does this sound like a voltage regulator problem?
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#13
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If the voltage at the battery is over 12 volts, but the voltage at the starter or alternator or jump terminal is below 12 volts, then you have a voltage drop somewhere in the electrical system. Could be as simple as a bad ground.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#14
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I suspect the problem is a bad or clogged transmission solenoid. Since the solenoid is inside the transmission, accessible by removing the pan, I would eliminate other potential causes first.
If you don't know when the codes were last cleared I would clear them and see what comes back first. Next, I suggest you unlock the cluster and monitor the charging system. A bad battery or one that has a low charge will cause all kinds of electrical gremlins. Eliminate the charging system as a potential cause. I would expect low transmission fluid to cause more issues than you have mentioned but it is easy to check. Drive enough to get the fluid near operating temp. Turn off the engine and pull the fill plug. You should see a small amount of fluid come out the fill hole or the fluid will be at the fill hole level. If it doesn't add proper fluid until it does. It will have to be down a considerable amount to be the cause. The vehicle needs to be level for this process. At that point it is time to see a transmission shop that is familiar with BMW transmission for a diagnosis. You could get a diagnosis first and have them check fluid level when they do so though diagnosis may cost $$$. Dealers don't have transmission expertise.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
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failsafe, program, trans, trans failsafe program |
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