BMW VEHICLE: DRIVEABILITY COMPLAINTS DUE TO COOLING FAN RELAY FAILURE. THE CUSTOMER MAY COMPLAIN OF INTERMITTENT DRIVEABILITY PROBLEMS, DESCRIBED AS-ENGINE IS LACKING POWER WHEN ACCELERATING UPHILL; TRANSMISSION WILL NOT UPSHIFT UNDER HEAVY ACCELERATION; DISTINCT HESITATION WHEN ACCELERATING FROM 30-45MPH. NO MODEL YEARS LISTED. *PE