BMW X3 Service & Repair Manual: Engine compartment
Power Distribution Box (Z4) has the following consumers:
- Electric Auxiliary Heater
- Electric Fan
- Electronic Power Steering (EPS)
- Dynamic Stability Control (DSC) Return Pump
- Fuse U2: Supply Voltage For Electric Fan
- Fuse U3: Supply Voltage For DSC Return Pump
- Fuse U4: Supply Voltage For Electric Auxiliary Heater


NOTE:
Power Distribution Box Z8 (Fuse block on the battery ) contains fuses and
relays. If one of the fuses or one of the relays is faulty, the complete power
distribution box must be replaced.
Power Distribution Box (Z8) has the following consumers:
-
Power distribution box at front in the junction box (passenger compartment)
- Power distribution box, rear (luggage compartment)
- Electronics box in engine compartment for Valvetronic, common rail (fuel injection for diesel fuel)
- Top HiFi amplifier
- Intelligent battery sensor (IBS)

WARNING: Vehicles are equipped with air bag supplemental restraint
system. Before attempting any repairs involving steering column, instrument
pan ...
For location of Front Distribution Box Z1. For amperage and components covered.
LUGGAGE COMPARTMENT
For location of Rear Distribution Box Z2 ...
Other materials:
BMW X3 Owners Manual > General driving notes: Braking safely
Your vehicle is equipped with ABS as a standard
feature.
Applying the brakes fully is the most effective
way of braking in situations needed.
Steering is still responsive. You can still avoid
any obstacles with a minimum of steering effort.
Pulsation of the brake pedal and sounds from
t ...