Most things are regulated in germany. Some hazard light switches are built into the multifunction or combination switch on the steering column.
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Where is the hazard light switch. The hazard light switch is located in the middle of the center dash vent. For example a vehicle that has turn signals indicators in other words and more than three wheels needs to have hazard lights. If your hazard light switch fails it may leave your hazard lights on all the time even when the key is out of the ignition. It may also cause your turn signals to not operate. Similarly follow for the left and right wire. The hazard switch button consist of 3 wires.
On some vehicles there is a button on the top of the steering column shroud while on older vehicles they may turn on when a hazard switch under the column is pulled down. Now connect the hazard buttion middle wire to the middle wire of the stock wiring. Others are located elsewhere on the dash. Your hazard lights are operated by pressing the hazard switch on your dashboard. The vent in the middle of the dash has two adjustable vents and the button that turns on the hazard lights is in between the two vents. Inside a conspicuous warning light in the drivers field of vision needs to show that the lights are flashing outside.
Use the wire stripper to strip little insulation from all 3 stock wires to expose the wire. If you switch them on all the indicator lamps need to emit amber light with a frequency of 15 hz 05 hz. The flashers will operate with the ignition switch placed in any position. Turn signals do not work when the hazard warning flasher lights are on. Some state laws may prohibit the use of the hazard warning flasher switch while driving.