2007 BMW 5 Series 525xi N52B25 (E60)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Electric water pump failure
• CCV (crankcase ventilation valve) clogging
• VANOS solenoid issues

First checks

• Run compression test to check engine health
• Inspect VANOS operation and solenoid functionality
• Check for oil leaks at valve covers and oil filter housing

Before replacing parts

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• The 525xi is the all-wheel drive version of the E60 525i.
• Market variations exist with slight emissions and equipment differences; engine code N52B25 is consistent globally for 2007.
• Oil capacity includes filter change; synthetic oil required to meet BMW Longlife standards.