Scanning of switch positions, function - GF82.90-P-3001PP

MODELS 203 up to 30.6.02 

Reading in multifunction steering wheel button 

The buttons of the multifunction steering wheel are read in voltage-coded by the electronic ignition switch control unit (N73).

All buttons on the multifunction steering wheel are read in directly by the electronic ignition switch control unit (N73) via 2 lines.

Priorities 

If, within the left multifunction steering wheel button group (S110) or the right multifunction steering wheel button group (S111) several buttons are pressed simultaneously, the instrument cluster (A1) will always only activate one function. As a result, the different functions have different priority ranks.

Allocation of priority ranks within the right multifunction steering wheel button group (S111):

• Fanfare horn push-button (S111s5)
• Accept/terminate phone call button (S111s3)
• Button + and -, setting of specific functions and volume control (S111s1)

Allocation of priority ranks within the left multifunction steering wheel button group (S110):

• Fanfare horn push-button (S110s5)
• System selection button (S110s3)
• Scroll forward/back push-button (S110s1)