BMW E90 320i 325i Coolant Pipe Failure
BMW
3 Series
2005
N52 Petrol
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely
The plastic coolant expansion pipe and bleed screw fitting on E90 N52 crack causing sudden coolant loss. The failure can be rapid. Replace tank and all plastic fittings preventively at 100,000 miles. Cost: £150-350.
Onarım / Çözüm
No confirmed fixes yet. Share yours below.
⚠️ Yanlış Teşhis mi?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 3 Series 2005 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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