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Dashboard alert
Posted: Fri Dec 12, 2025 6:35 pm
by David_Smith2003
Greetings once more, everyone. I possess a 2012 F12 640D that intermittently displays a dashboard warning indicating a drivetrain issue, advising me to proceed at a modest speed and consult service. I have examined the diagnostic codes, but none provide any insights. Any assistance would be appreciated.
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:36 pm
by Jacob_Evans2001
If a drivetrain issue is indicated, there will be saved code(s).
What apparatus did you utilise for the scanning process?
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:37 pm
by David_Smith2003
The Icarsoft CMAX is reportedly an effective system; nevertheless, the issue may lie with my limited technical proficiency.
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:38 pm
by BMW_Fan2020
Does the vehicle enter limp mode?The power is reduced to a predetermined RPM range, allowing continued operation at a diminished speed.
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:38 pm
by David_Smith2003
The vehicle does not enter full limp mode; power is somewhat reduced but sufficient to achieve 70 mph, and acceleration normalises shortly without the need for powering off and resuming.
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:39 pm
by BMW_Fan2020
It appears to be related to the vacuum system; diagnostics will be necessary using a proficient instrument, preferably ISTA, or alternatively, a reliable handheld device equipped with BMW software.What is your location?
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:39 pm
by David_Smith2003
Medway, Kent, United Kingdom
Re: Dashboard alert
Posted: Fri Dec 12, 2025 6:40 pm
by David_Smith2003
