Vauxhall Zafira B - Signal horn does not function | HELLA

The above vehicles can experience signal horn failure due to a fault in the steering column´s electronic module.

The fault often occurs after driving long distances with the lights switched on. A contact weakness in the steering column module can cause the signal horn to malfunction.

The vehicle manufacturer is already aware of the problem. As part of a service campaign, the vehicles will be checked and new software loaded if necessary. A blue dot will then be stuck on the back of the steering wheel.

Nevertheless, one may assume that for various reasons not all vehicles have been checked and repaired.