Retrofit mechanical swing-away trailer hitch - AN31.10-P-0001TA

MODEL 211.2##/2## (except 211.276/277) 1# 

except CODE (772) AMG styling package - front spoiler, side skirts and rear apron 

except CODE (950) AMG sport package 

Fig 1: Exploded View Of Retrofit Mechanical Swing-Away Trailer Hitch

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Trailer Connection Unit Operating Unit And Control Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Shield And Nuts

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes regarding installation of trailer hitch		AH31.10-P-1000-02TA
Notes on EU type approval requirements	Applies only to countries within the European Union. Notes on acceptance of trailer hitch at an authorized test point		AH31.10-P-1000-03T
1	Disconnect ground cable from battery		AR54.10-P-0003TA
2	Remove left and right interior trim in side of cargo area		AR68.30-P-1180T
3	Remove trim from spare tire well	Vehicles up to 31.5.06 without code (943) Automatically extendable main loading floor	AR68.30-P-4620T
		Vehicles as of 1.6.06 without code (943) Automatically extendable main loading floor	AR68.30-P-4620TM
		With code (943) Automatically extendable main loading floor	AR68.30-P-4620TA
4	Make cutout for operating lever in spare tire well paneling
5	Loosen SAM control unit with fuse and relay box in trunk and place to one side	Vehicles up to 1.6.08 without code (809) Model year 2009	AR54.21-P-1258TA
		Vehicles as of 2.6.08 with code (809) Model year 2009	AR54.21-P-1258TY
6	Remove rear bumper		AR88.20-P-2200TA
7	Unscrew nuts (16)
8	Remove shield (17) of rear muffler	Shield (17) on rear muffler on left and right.
9	Replace electric fan	It should be checked in the EPC whether the electric fan fitted corresponding to the vehicle equipment can be used for retrofit of the trailer hitch (AHV). If necessary the electric fan should be removed and replaced by an electric fan which is compatible with the trailer hitch.
	Install
10	Retrofit detachable mechanical body components		AN31.11-P-8080-05TA
		Nut with spring washer, trailer coupling to rear end center assembly	*BA31.11-P-1001-01C
		Bolt securing trailer hitch to side member reinforcement	*BA31.11-P-1002-01C
		Bolt, side member reinforcement to side rail	*BA31.11-P-1003-01C
11	Retrofit trailer connection unit control panel (A63/1)		AN31.11-P-8080-06TA
		Bolt, release lever to console	*BA31.11-P-1005-01C
12	Retrofit trailer connection unit control panel (N28/1)		AN31.19-P-8080-05TA
13	Retrofit trailer hitch wiring harness		AN31.19-P-8100-05TA
14	Install remaining parts	Steps 9 to 1.
	Check
15	Connect STAR DIAGNOSIS
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
16	Perform retrofit variant coding	Variant coding for trailer hitch with STAR DIAGNOSIS.
17	Supplement special equipment on the vehicle data card and in the vehicle data card online	Enter code (550) Trailer hitch.	AN00.01-P-1001-01V
18	Close STAR DIAGNOSIS
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
19	Perform function check of lighting signals on the trailer hitch socket (13-pin)		AN31.19-P-8100-06T