BMW i4 G26

Fifth generation of the BMW electric drivetrain with a single motor. High efficiency through an electrically excited synchronous motor without rare-earth magnets. Watch the 12V battery and control unit software.

• !! Faulty switching valve in cooling circuit (Vitesco) from 30,000 km

  A Vitesco switching valve (64119462114) in the cooling circuit fails, especially in frost. Coolant runs out before the warning light activates. BMW temporarily imposed a global delivery stop on new i4s.

  Symptoms: Coolant puddle under the car; heater fails before warning light illuminates; coolant level warning appears too late.
  300–1,800 $
  Ad 64119462114BMW i4 Kühlventil VitescoBMW i4 Umschaltventil cooling circuit
• !! Recall: software algorithm shuts down high-voltage system

  A software bug in the HV system monitoring triggers a preventive drivetrain shutdown even when no actual hazard exists. Vehicle loses drive within 15–20 seconds. BMW recalled 70,852 vehicles (i4/iX/i5/i7, MY 2022–2025).

  Symptoms: Warning 'High-voltage system fault' followed by loss of drive; steering and brake assist remain active; car coasts slowly to a stop.
  0–0 $
  Ad BMW BMW-Gen5-Single recall
• !! Recall: manufacturing defect in HV battery cells (fire risk)

  HV battery cell modules were not manufactured to specification. Module frame can crack, shut down the high-voltage system, or cells can overheat to fire risk. Affected: i4, iX, i7 (production 07.2021–02.2024).

  Symptoms: Loss of drive while moving; HV battery warning; in rare cases smoke or fire.
  0–0 $
  Ad BMW i4 high-voltage battery ZellmodulBMW iX battery packpack

+ 3 more engine weaknesses + vehicle weaknesses

Fifth generation of the BMW electric drivetrain with a single motor. High efficiency through an electrically excited synchronous motor without rare-earth magnets. Watch the 12V battery and control unit software.

• !! Faulty switching valve in cooling circuit (Vitesco) from 30,000 km

  A Vitesco switching valve (64119462114) in the cooling circuit fails, especially in frost. Coolant runs out before the warning light activates. BMW temporarily imposed a global delivery stop on new i4s.

  Symptoms: Coolant puddle under the car; heater fails before warning light illuminates; coolant level warning appears too late.
  300–1,800 $
  Ad 64119462114BMW i4 Kühlventil VitescoBMW i4 Umschaltventil cooling circuit
• !! Recall: software algorithm shuts down high-voltage system

  A software bug in the HV system monitoring triggers a preventive drivetrain shutdown even when no actual hazard exists. Vehicle loses drive within 15–20 seconds. BMW recalled 70,852 vehicles (i4/iX/i5/i7, MY 2022–2025).

  Symptoms: Warning 'High-voltage system fault' followed by loss of drive; steering and brake assist remain active; car coasts slowly to a stop.
  0–0 $
  Ad BMW BMW-Gen5-Single recall
• !! Recall: manufacturing defect in HV battery cells (fire risk)

  HV battery cell modules were not manufactured to specification. Module frame can crack, shut down the high-voltage system, or cells can overheat to fire risk. Affected: i4, iX, i7 (production 07.2021–02.2024).

  Symptoms: Loss of drive while moving; HV battery warning; in rare cases smoke or fire.
  0–0 $
  Ad BMW i4 high-voltage battery ZellmodulBMW iX battery packpack

+ 3 more engine weaknesses + vehicle weaknesses

Twin-motor variant of the Gen5 drivetrain with AWD and enormous system output. Up to 660 hp in the M70 version. The high-voltage system and cooling circuit are complex to service.

• !! Recall: incorrectly manufactured Combined Charging Unit (CCU)

  The high-voltage combined charging unit (CCU) was incorrectly installed in a production batch. A loose component interrupts current flow and can shut down drive while driving. Affected: iX xDrive50, iX M60, i4 M50 (June–September 2022).

  Symptoms: Sudden loss of drive while moving; intermittent high-voltage fault messages; vehicle won't restart after shutting down.
  0–0 $
  Ad BMW CCU Ladecontrol unitBMW iX LadeeinheitBMW i4 M50 CCU
• !! Recall: manufacturing defect in HV battery cells (fire risk)

  Manufacturing defect in HV battery cell modules (production 07.2021–02.2024). Frame structure can crack, shut down the high-voltage system, or cells can overheat to the point of fire risk. Affected: i4 M50, iX M60, i7 M70.

  Symptoms: Sudden loss of drive; HV battery warning; in extreme cases smoke or fire at the battery.
  0–0 $
  Ad BMW iX M60 high-voltage batteryBMW i4 M50 battery packzellmodul
• !! Heat exchanger valve leaking from 30,000 km

  Same production issue as Gen5 Single. Heat exchanger valve leaks coolant. BMW replaces under warranty, but lengthy workshop visits.

  Symptoms: Coolant loss, fault message, reduced charging performance
  500–3,000 $
  Ad BMW iX heat exchangerventilBMW i4 M50 coolantventil

+ 2 more engine weaknesses + vehicle weaknesses