BMW X5 Owners & Service Manuals

BMW X5: Fuel Supply And Management

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 N52KP And N51 Fuel System

The N52KP and N51 engine continue to use the conventional "manifold injection" system carried over from the N52. The fuel supply components are also carried over with regard to the EKP module, fuel

 HPI Function

The fuel is delivered from the fuel tank by the electric fuel pump via the feed line (5) at an "feed" pressure of 5 bar to the high pressure pump. The feed pressure is monitored by the low-pressure

 Limp-Home Mode

If a fault is diagnosed in the system, such as e.g. failure of the high-pressure sensor, the fuel-supply control valve is de-energized; the fuel then flows via a so-called bypass into the rail. In t

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 Engine-Off / Coasting

Principle Under certain conditions the engine is automatically decoupled from the transmission in the D selector lever position. The vehicle continues traveling with the engine idling to reduce consumption. Selector lever position D remains engaged. This driving condition is referred to as coastin

 Ignition Coil

NOTES ON CHECKING IGNITION SYSTEM Troubleshooting -> Fault in fuel injection system -> Spark plug faults -> Ignition coil faults -> Further fault patterns with evaluation -> Additional fault notes for troubleshooting. Oscillograms -> Normal oscillogram -> Oscillograms of ignitio

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