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Registered User
Join Date: Dec 2017
Posts: 3
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530i faulty error messages bad ground
Lots of error messages
transmission failure ABS failure dynamic drive failure seat belt not engaged and more Installed a new "Micro Power Module" in the trunk ( no water problems) Same error messages 2004 530i starts and drives Seems that the automatic transmission does not shift properly Is this a bad ground(s) problem Which ground connections are suspect ??? |
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12-04-2017, 05:57 PM
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Registered
Join Date: Dec 2017
Posts: 33
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It could be, but before checking grounds you might want to ensure your battery and alternator are in top condition. A weak battery or alternator can cause the symptoms you've listed.
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12-06-2017, 08:47 AM
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Administrator
Join Date: Aug 2016
Location: Los Angeles, CA
Posts: 6,087
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Are you also getting a CEL ? If so, it may be a good idea to have the codes read - this will give you a lot of great info as to where to start troubleshooting.
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12-06-2017, 01:05 PM
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Registered User
Join Date: Dec 2017
Posts: 3
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Update
The problem was a bad voltage regulator on a Valeo alternator
The voltage output was at times much too high (17+ volts) Replaced the voltage regulator with an aftermarket model that had a much larger heat sink Just completed a 3,000 trip with no control module faults I suspect the Valeo voltage regulator has a weak design fault If it goes again, I would replace the alternator with a Bosch unit |
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04-05-2018, 07:17 PM
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