The recall expansion covers 3 Series, 5 Series and Z4 models from the 2006 model year. The problem has been traced to irregularities in the manufacturing process that could allow moisture to occur near the PCV valve heater and lead to a short circuit. The PCV valve is an emissions device that keeps pollutants created by an engine from being released into the atmosphere. It also helps keep the engine oil clean and prevents crankcase pressure from building up.
BMW warns its customers to stop driving the vehicle if there is smoke coming from the engine, or if the driver smells smoke or plastic burning.
Vehicles added to the recall include the 525i, 525xi, 530i, 530xi, 530xi Sports Wagon, 325i, 325xi, 325xi Sports Wagon, 330i, 330xi, Z4 3.0i and Z4 3.0si from the 2006 model year.
Dealers will replace the PCV valve heater at no cost. The work is expected to take 1 to 2 hours.
Owners will receive notification from BMW in June.
How to contact the manufacturer: Owners may contact BMW customer service at 800-525-7417.
To see if your vehicle is involved in this or any other recall, click here.