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Fire risk Published 13 Jun 2022 Ref JP-1234260

BMW: Positive Crankcase Ventilation (PCV) Heater

Translated from Japanese · machine translation

Safety-critical recall — fire risk. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
13 Jun 2022
Units affected
52527
Reference
JP-1234260

Affected vehicles

BMW BMW 130i 2004–2011 BMW BMW 323i 2004–2011 BMW BMW 325i 2004–2011 BMW BMW 325i Touring 2004–2011 BMW BMW 325xi 2004–2011 BMW BMW 330i 2004–2011 BMW BMW 330xi 2004–2011 BMW BMW 525i 2004–2011 BMW BMW 525i Touring 2004–2011 BMW BMW 530i 2004–2011 BMW BMW 530i Touring 2004–2011 BMW BMW 530Xi Touring 2004–2011 BMW BMW 630i 2004–2011 BMW BMW X1 xDrive 25i 2004–2011 BMW BMW X3 2.5Si 2004–2011 BMW BMW X3 3.0Si 2004–2011 BMW BMW X5 3.0si 2004–2011 BMW BMW Z4 2.5i 2004–2011 BMW BMW Z4 3.0si 2004–2011 BMW BMW Z4 sDrive 23i 2004–2011 BMW BMW Z4 Coupe 3.0si 2004–2011

Hazard

Improper plastic manufacturing of the PCV heater causes irregularities in the insulation of the positive temperature coefficient (PTC) heater element. Over time, the PTC heater element may short circuit but is not reliably protected by the fuse. As a result, the PTC heater element may overheat abnormally, causing the housing to melt, the engine warning light to illuminate, and in the worst case, leading to fire.
Show original (日本語)
ブローバイヒーターのプラスチック製造が不適切なため正温度特性(PTC)ヒーターエレメントへの絶縁体に不規則性が生じ、時間の経過とともに正温度特性(PTC)ヒーターエレメントがショートする可能性があるが、ヒューズによって確実に保護されない。そのため、正温度特性(PTC)ヒーターエレメントが異常発熱して外装が溶け、エンジン警告灯が点灯し最悪の場合、火災に至るおそれがある。

Remedy

Inspect all vehicles' PCV heaters and replace with corrective parts if defects are found. Simultaneously, add a 7.5 A protective fuse between the engine wire harness and PCV heater, and optimize the circuit capacity.
Show original (日本語)
全車両、ブローバイヒーターの点検を行い不具合が確認された場合は対策品と交換する。また、同時にエンジンワイヤーハーネスとブローバイヒーター間に7.5Aの保護ヒューズを追加し容量の最適化を行う。

Official source

View the official recall notice