BMW X3 Service & Repair Manual: Contents of engine electrical system general
General Information
- WORKING ON IGNITION SYSTEM
- REMOVING AND INSTALLING ELECTRONIC CONTROL UNITS
- WELDING WORK (overload protection of control units)
- Disconnecting and connecting battery
- DISCONNECTING AND CONNECTING TEST EQUIPMENT
- COMPONENT INSPECTION
- EXTERNAL JUMP-STARTING AID
- Compression testing
HANDLING COMPONENTS AFTER FLOOD DAMAGE
Flood damage can occur if the permissible fording depth of a vehicle is exceeded. Ingress of water can cause damage to the engine (water shock) or components.
Because dirt particles generally enter into the component with the water (e.g. starter motor, wiring harness), the components need to be thoroughly inspected.
Residual moisture in the components leads to corrosion (increased contact resistance in the component), which can lead to a component failure at a later time.
If water ingress into the electrical components cannot be ruled out, it is recommended to replace the component to ensure correct functioning through the vehicle lifetime.
Butt connector for repairing a plug connection
Special tools required:
61 0 300
61 4 340
61 0 240
IMPORTANT:
Identify cause of damage (e.g. sharp-edged body components, faulty e ...
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 cont ...
Other materials:
BMW X3 Owners Manual > Steptronic transmission: Electronic unlocking of the
transmission lock
General information
Electronically unlock the transmission lock to
maneuver vehicle from the danger area.
Unlocking is possible, if the started can spin
the engine.
Engaging selector lever position N
1. Depress the brake pedal.
2. Press the Start/Stop button. The starter
must audibly sta ...