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2010 2011 BMW 5 Series Forum F10
 F10 Technical Topics
Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
WARNING!!! JB4 can damage your cars electrical system if handeled improperly
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| 05-14-2015, 08:58 PM | #1 |
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Colonel
 
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WARNING!!! JB4 can damage your cars electrical system if handeled improperly
To all current owners of a JB4!
The JB4 installation manual has been updated with the following warning: "Also be very careful when working with the BMS USB cable as it sits close to the battery rail which is a live +12v connection. Allowing the USB cable to touch the +12v connection WILL damage the JB4 and MAY damage the TMAP sensor wiring requiring the ground bypass at the bottom of the guide to be performed. Wrapping a piece of cloth tape over the battery rail connection and/or USB connection will help prevent accidental damage"
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