LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 2010 >> Tiguan S 4Motion >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (HVAC DTC Based Diagnostics - Manual Temperature Control) >> 00 General, Technical Data >> Manual Temperature Control >> B1143 - Mode Down Switch Performance >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

B1143 - Mode Down Switch Performance: Notes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Volkswagen Routan, 2013 Volkswagen Routan, 2012 Volkswagen Routan, 2011 Volkswagen Routan, and 2010 Volkswagen Routan. However, it is still accessible from the selected car via links, so may be relevant.

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS information.

Theory of Operation 

The switch input changes when the switch is pushed down. A stored DTC indicates that the mode down switch was stuck in a pushed position for more than 10 minutes, but has since returned to its normal state. An active DTC indicates that the mode down switch is stuck in a pushed position. When active, this DTC will prevent proper mode down switch and status indicator function.

Possible Causes
OBJECT HOLDING THE MODE DOWN SWITCH IN A PUSHED POSITION
SUBSTANCE CAUSING THE MODE DOWN SWITCH TO GET STUCK IN A PUSHED POSITION
A/C HEATER CONTROL