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🟢 SOLVED: BMW N47 EGR cooler failure — coolant leak into intake — BMW 3 Series 2010 | MyCarFault
🟢 SOLVED 0% 72 fixes reported · 108 driver confirmations

🟢 BMW N47 EGR cooler failure — coolant leak into intake

BMW 3 Series 2010
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⚡ Quick Summary
Severity Level
Critical
Safe to Drive?
🚫 Do NOT Drive
Safety Impact
Direct safety risk — affects safe operation of the vehicle
Urgency Level
🔴 Fix Immediately

Coolant level dropping without visible external leaks. White smoke from the exhaust on start-up. The EGR cooler on the N47 engine cracks internally allowing coolant to enter the intake manifold and combustion chambers. If the coolant leak is severe, hydrolock and engine damage can occur. The EGR cooler and EGR valve should be replaced together. Fitting an uprated steel EGR cooler prevents recurrence.

Repair / Solution

No confirmed fixes yet. Share yours below.

⚠️ Wrong Diagnosis?

No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 3 Series 2010 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

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