2000 BMW 3 Series 328ci M52B28 (E46)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Cooling system failures (water pump, thermostat)
• Rear subframe cracking on high mileage vehicles

First checks

• Inspect cooling system hoses and thermostat
• Check VANOS function and seals
• Inspect suspension bushings for wear

Vor dem Teiletausch

• 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

• 2000 model year E46 328ci introduced the M52TUB28 engine in some markets late in the production year, with slight updates to VANOS and emissions
• Some market-specific restrictions on power and emissions apply, notably stricter in North America