IMPORTANT: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification: Jointing torque and angle of rotation must be observed without fail (risk of damage) .
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .
Necessary preliminary work:
Release connector (1) and remove.
Release screw.
Remove pulse sensor (2).
NOTE: Check stored fault message.
Delete fault memory.
BMW X3 Service & Repair Manual > Troubleshooting: Instructions for welding work (overload protection of control units)
CAUTION: Follow instructions for body repairs.
When performing welding work on installed control units, to avoid any defects in the electronic control units,
observe the following steps:
Observe instructions for disconnecting and connecting battery.
Detach terminal of battery negative l ...