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N52 B25 engines with electric coolant pump — BMW

N52 B25 engines with electric coolant pump on BMW: 17 steps, engines N52B25A. What to remove, in what order, and what to check after.

Workshop procedure for BMW — the exact step sequence and torque figures, straight from real workshop data.

17 steps 1 engine code

🧭 Before you start

Fits: platform codes 2.5SI, |, 323I, 325I, XI, 525I, LI, (155/160, KW), XDRIVE, 25I

  • Opens: coolant

Don't miss

  • Top up the coolant level to the MAX mark
  • Ensure the vehicle battery is fully charged
  • Do not start the engine

🔧 Engine codes this applies to

N52B25A

📐 10 workshop diagrams for N52B25A

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

N52 B25 engines with electric coolant pump — N52B25A · diagram 1
N52 B25 engines with electric coolant pump — N52B25A · diagram 2
N52 B25 engines with electric coolant pump — N52B25A · diagram 3
N52 B25 engines with electric coolant pump — N52B25A · diagram 4
N52 B25 engines with electric coolant pump — N52B25A · diagram 5
N52 B25 engines with electric coolant pump — N52B25A · diagram 6
N52 B25 engines with electric coolant pump — N52B25A · diagram 7
N52 B25 engines with electric coolant pump — N52B25A · diagram 8
+ 2 more diagrams
🔒 10 workshop diagrams for this job Ask about your BMW N52B25A — free or sign up free to see the drawings

📋 Procedure

  1. Bleed the cooling system
  2. Follow the procedure:
  3. Top up the coolant level to the MAX mark
  4. Refit the coolant reservoir cap
  5. Place the battery on charge
N52B25A? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Ensure the vehicle battery is fully charged
  2. Connect an auxiliary power source, if available
  3. Turn the ignition on
  4. Turn the heater control to maximum temperature
  5. Turn the blower on
  6. Press and hold the accelerator pedal
  7. For 10 seconds
  8. Note: Do not start the engine
  9. The bleeding process should start
  10. Wait for 12 minutes
  11. Check the coolant level
  12. Top up if necessary
Workshop diagrams

Ask TorqFix about your BMW N52B25A — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.

Ask about your BMW N52B25A — free → or sign up free to see the drawings

Other BMW procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.