1991 BMW 318 Visibility Defroster Defogger Hvac System Hea Recall

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1991 BMW 318 Visibility Defroster Defogger Hvac System Hea Recall

 NHTSA Recall #20421
NHTSA Compaign #93V015000
MFG Compaign #
 Model Year1991
 Date of notification04/06/93
 Begin date of manufacuring01/01/83
 End date of manufacturing01/01/93
Type of recallV
Recall initiatorODI
 Report received01/02/93
 Report created05/02/93
Regulation part number
FMV safety standard number
Estimated number of affected units375000
 Defect summaryThe malfunction or failure of a coolant system component results in significantly increased coolant temperature and a resulting increase in system pressure.
 Consequence summaryVehicles operated under this increased cooling systempressure condition can suffer damage or failure of parts of the cooling systemsuch as (1) leakage from a coolant hose, (2) leakage of the radiator orexpansion tank, (3) disconnection of a hose from a pipe or a fitting, and (4)cracks in the heater core end piece resulting in coolant leakage. In some cases,boiling coolant can contact the lower right leg of the driver resulting inburns. Also, escaping coolant in the passenger compartment can cause vaporfogging of the interior surface of the windows, reducing driver visibility.
 Corrective actionDealers will install a thermostatic bypass valve in the engine compartment to control coolant temperature in the heater core. Also, a new design radiator cap will be installed, to control pressure and provide greater coolant overflow in the event of overheating.
 Recall notesSystem: coolant system. Vehicle description: passenger cars.

  • What is Recall?

    A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
  • What is Failure?

    Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
  • What is Defect?

    Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.



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