Some of the latest models are equipped with an air bag, or Supplemental Restraint System (SRS). To avoid possible damage to this system, the manufacturer recommends that for models with an air bag, the following procedure be submitted to the competence of the dealer service department or auto repair shop, as it requires the use of special equipment and technology. There is also a risk of injury if the air bag mechanism is accidentally deployed.
The turn signal/hazard flasher assembly is a small box-shaped unit located in the wiring harness in or near the steering column. It is accessible by removing the steering column covers. To remove it, squeeze the tabs.
When the breaker unit is functioning properly, a steady clicking sound should be heard when the turn signals or hazard warning lights are turned on. If one of the turn signals fails and the breaker unit does not make a characteristic clicking sound, this indicates that the indicator lamp has failed.
If both turn signals do not light, the problem may be a blown fuse, a faulty breaker box, a broken switch, or a poor connection and open circuit. If a quick check of the fuse box reveals that the turn signal circuit fuse is blown, check the wiring for a short before replacing it.
Make sure the new breaker assembly is identical to the one being replaced. Compare the old assembly with the new one before replacing it.
Install in reverse order.
The article was copied from an online resource «BMWMAN»