Fold left/right outside mirror, function - GF88.79-P-2002LE

MODEL 216.3, 221.0 /1 as of model year 09 /YoM 08 

Function requirements, general 

• Mirror glass adjustment not active
• On-board electrical system consumer shutoff not active

Folding left/right outside mirror, general 

The outside mirror housings can be folded in and out electrically in pairs. This can be done both automatically as well as manually. If circuit 15R is switched off during an active housing adjustment, the housing adjustment is nevertheless completed.

If a new housing adjustment request is recognized during an active housing adjustment, the housing adjustment is directly switched to the opposite direction.

The fold left/right outside mirror function comprises the following subfunctions:

• Manual folding in/out, function sequence 
• Automatic folding in/out, function sequence 

Additional function requirements for manual folding in and out 

• C. 15R On
• Vehicle speed v < 47 km/h

Manual folding in/out, function sequence 

When the outside mirror fold-in/out switch (S20/1s9) in the driver outside mirror and trunk lid power window switch group (S20/1) is pressed momentarily, the mirror housings folded in (garage position) or folded out (driving position).

The corresponding adjustment request is read by the left front door control unit (N69/1) (model 221) or left door control unit (N69/1) (model 216) via the front door LIN.

The left door control unit takes over the master function during adjustment and relays the signals to the right front door control unit (N69/2) (model 221) or right door control unit (N69/2) (model 216) via the interior CAN.

The left door control unit actuates the power folding mirror motor (M21/1m3) in the left electrically adjustable and heated outside mirror (M21/1) and the right door control unit actuates the power folding mirror motor (M21/2m3) in the right electrically adjustable and heated outside mirror (M21/2).

The mirror fold-in function is no longer possible at a vehicle speed of v ≥47 km/h.

The instrument cluster (A1) transmits the vehicle speed signal via the central CAN to the central gateway control unit (N93), which relays the signal to the left door control unit via the interior CAN.

Additional function requirements for automatic folding in and out 

• C. 15C OFF
• Function in COMAND controller unit (A40/3) activated
• Mirror housing actuated last in folding out direction (with fold-in function)
• Mirror housing previously folded in automatically (with fold-out function)

Automatic folding in/out, function sequence 

When the vehicle is locked using the central locking system (CL [ZV]) from the outside with the transmitter key (A8/1), both mirror housings are folded in automatically.

The mirror housings are folded out again the next time the CL is unlocked and the driver or passenger door is opened.

The status of the driver door is sensed by the left front rotary tumbler switch (A85s1) (model 221) or right rotary tumbler switch (A85s1) (model 216). The signal from the left rotary tumbler switch is read in by the left door control unit.

The status of the passenger door is sensed by the right front rotary tumbler switch (A85/1s1) (model 221) or right rotary tumbler switch (A85/1s1) (model 216). The signal from the right rotary tumbler switch is read in by the right door control unit.

If the mirror housings are still folded in with circuit 15R ON by a previous automatic folding-in procedure, the mirror housings are folded out immediately.

If the mirror housings were folded in manually prior to that, the mirror housings are not actuated via the automatic adjustment.

	Electrical function schematic for folding outside mirrors	Model 216	see PE88.79-P-2057-97CAA
		Model 221	PE88.79-P-2057-97SAA
	Instrument cluster, component description	A1	see GF54.30-P-6000LE
	COMAND controller unit, component description	A40/3 With code (526) COMAND with single DVD drive (without navigation) or Code (527) COMAND APS with single DVD drive (with navigation)	see GF82.85-P-3136LE
		With code (529) HIGH Class Japan	see GF82.85-P-3136LEJ
		With code (530) COMAND APS USA (with navigation system)	see GF82.85-P-3136LEU
	Left door control unit, component description	N69/1 Model 216	see GF72.29-P-4124LA
	Left front door control unit, component description	N69/1 Model 221	see GF72.29-P-4141LE
	Right door control unit, component description	N69/2 Model 216	see GF72.29-P-4128LA
	Right front door control unit, component description	N69/2 Model 221	see GF72.29-P-4142LE
	Component description for the EZS control unit	N73	see GF80.57-P-6003LE
	Central gateway control unit, component description	N93	see GF54.21-P-4170LE