Sales of the vehicles have been ordered to be halted by the National Highway Traffic Safety Administration, which are suffering from an unexpected increase in engine speeds when the AC system is in operation.
The electronic control module can incorrectly spike idle speeds when the AC compressor is engaged, which can lead to vehicle acceleration and a possible crash, the NHTSA summarized on its website. The federal body is urging drivers not to operate the AC system in the potentially affected vehicles until they have brought their vehicles in for a free fix at a VW dealership.