JB4tech.com - International Turbo Tuning Discussion
israelg48 israelg48 is offline
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Posts: 9
Join Date: Mar 2021
Car: 2018 BMW X5 50i
Default Blind spot detection and speedometer malfunction. - 05-01-2021, 10:06 AM

Hi guys

Sometimes the digital Speedo gets stuck at max speed after the JB4 turns on. When that happens, the blind spot monitoring also malfunctions.

It clears when I turn off, leave and lock for a while.

Any ideas why this may be?
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