(Retrofit Trailer Hitch - AN31.10-P-8080LWH)

Model 253.3 (except 253.354) up to 5/31/19 

with code 460 (Canada version) 

except code 494 (US version) 

except code 5U1 (Aluminum rear axle carrier) 

except code 737L (Mexico) 

except code 830 (China version) 

except code 835 (South Korea version) 

except code U98 (LITHIUM-ION-STARTERBATTERY (LISB)) 

Model 253.3 (except 253.354) up to 5/31/19 

with code 494 (US version) 

except code 460 (Canada version) 

except code 5U1 (Aluminum rear axle carrier) 

except code 737L (Mexico) 

except code 830 (China version) 

except code 835 (South Korea version) 

except code U98 (LITHIUM-ION-STARTERBATTERY (LISB)) 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown with CODE P17 (KEYLESS-GO package) 

Courtesy of MERCEDES-BENZ USA

	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
Notice	Notes on retrofitting electrical/optical lines		AH82.00-P-0000-01A
Notice	Notes on the use of paint scraping nuts on ground connections		AH00.19-P-1000-20A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Notes on installing a trailer hitch		AH31.10-P-1000-02CW
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Notes on EU type approval requirements		AH31.10-P-1000-03T
	Remove
1	Print out the detailed installation instructions and hand them over to the customer.	For do-it-yourself installation of trailer hitch by the customer.
2	Remove load compartment floor.
3	Remove right trim in load compartment.
			AR68.30-P-1180LWG
4	Remove spare wheel well trim.
5	Remove right side trim in rear passenger compartment.
			AR68.30-P-4780EQ
6	Remove lower section of left and right B-pillar trim.
			AR68.30-P-4700LW
7	Remove center console.
		Model 253.3 (except 253.354) with transmission 716	AR68.20-P-2000LWA
		Model 253.3 (except 253.354) with transmission 724, 725	AR68.20-P-2000LWG
8	Remove rear floor covering.
			AR68.20-P-4800LW
9	Remove right front floor covering.
			AR68.20-P-2070LW
10	Remove floor covering at front left.
			AR68.20-P-2050LW
11	Release fuse box on right A-pillar.
			AR54.15-P-1311LWG
12	In the XENTRY Portal Parts Information in DG 99, check if the rear engine compartment lining installed in accordance with the vehicle equipment can be used for retrofitting the trailer hitch.	If the rear engine compartment lining is incompatible ↓ Remove engine compartment lining at rear.
		The removed engine compartment lining at the rear is no longer required.	AR61.20-P-1105LW
13	In the XENTRY Portal Parts Information in DG 99, check if the fuse and relay module installed in the rear passenger compartment in accordance with the vehicle equipment can be used for retrofitting the trailer hitch.	If the fuse and relay module in the rear passenger compartment is incompatible, ↓ replace fuse and relay module in rear passenger compartment.
		The removed rear fuse and relay module is no longer required.	AR54.15-P-0001LW
14	In the XENTRY Portal Parts Information in DG 99, check if the cooler installed in accordance with the vehicle equipment can be used for retrofitting the trailer hitch.	Model 253.3 with engine 274.9, 651 If the cooler is incompatible, ↓ replace the cooler.
		The removed cooler is no longer required.	AR20.20-P-3865RF
15	In the XENTRY Portal Parts Information in DG 99, check if the fan unit installed in accordance with the vehicle equipment can be used for retrofitting the trailer hitch.	Model 253.3 with engine 274.9, 642, 651 If the fan unit is incompatible, ↓ replace the fan unit.
		The removed fan unit is no longer required.	AR20.40-P-5050RF
16	In the XENTRY Portal Parts Information in DG 99, check if the fan unit wiring harness installed in accordance with the vehicle equipment can be used for retrofitting the trailer hitch.	If the fan unit wiring harness is incompatible, ↓ remove fan unit wiring harness. The removed fan unit wiring harness is no longer required.
17	Remove battery.	If the fan unit wiring harness is incompatible.
			AR54.10-P-0005LW
18	Remove windshield wiper system.	If the fan unit wiring harness is incompatible.
			AR82.30-P-6400LW
19	In the XENTRY Portal Parts Information in DG 99, check if the automatic transmission oil lines installed according to the vehicle equipment can be used for retrofitting the trailer hitch.	Model 253.3 with engine 274, 651 with transmission 725.0 with code M005 (Vehicles with 4MATIC/all-wheel drive), model 253.3 with engine 274, 651 with transmission 725.0 except code M005 (Vehicles with 4MATIC/all-wheel drive) If the automatic transmission oil lines are incompatible, ↓ replace automatic transmission oil lines.
		Model 253.3 with engine 274, 651 with transmission 725.0 except code M005 (Vehicles with 4MATIC/all-wheel drive)	AR27.55-P-0600MRE
		Model 253.3 with engine 274, 651 with transmission 725.0 with code M005 (Vehicles with 4MATIC/all-wheel drive) The removed automatic transmission oil lines are no longer required.	AR27.55-P-0600LW
20	Cut radiator shutters wiring harness branch-off line at a distance of approx. 2 cm from black 4-pin coupling.	Model 253.3 (except 253.354) with code 2U1 (Radiator shutters)
21	Insulate line ends of radiator shutters wiring harness branch-off line with solder terminal sleeves and strap down.	Model 253.3 (except 253.354) with code 2U1 (Radiator shutters)
		Note color coding of the lines. Insulate differently colored lines separately.	AR00.19-P-0100A
22	Remove rear bumper.
			AR88.20-P-2200LWG
23	Remove rear switch module lower sensor (A87/2) and rear switch module upper sensor from rear bumper (70).
		Model 253.3 with code P17 (KEYLESS-GO Package)	AR80.61-P-0012LW
24	Unfasten rubber retainers on rear muffler.	Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	*BR00.45-Z-1002-06A
25	Remove crossmember (6).	The removed crossmember (6) is no longer required.
	Install
26	Retrofit mechanical detachable parts.		AN31.11-P-8080-05LWH
		Bolt, trailer hitch to longitudinal member reinforcement (short)	*BA31.11-P-1001-01M
		Longitudinal member reinforcement for trailer hitch (short) to body	*BA31.11-P-1002-01M
		Assembly cleaner	*BR00.45-Z-1028-04A
27	Retrofit trailer hitch wiring harness.		AN31.19-P-8100-05LWH
		Right rear wheel well ground point	*BA00.19-P-1005-01E
		Left front footwell ground point	*BA00.19-P-1016-01E
		Left front footwell ground point (CAN)	*BA00.19-P-1017-01E
		Left footwell ground point	*BA00.19-P-1028-01E
28	Retrofit trailer hitch control unit.		AN31.19-P-8080-05LWH
29	Install new fan unit wiring harness.	If wiring harness for the fan unit is incompatible.	AN31.19-P-8100-07LWG
		Left front ground point	*BA00.19-P-1003-01E
		Nut, positive line to engine compartment prefuse box	*BA54.15-P-1003-01K
		Wiring harness repair kit, basic	Fig 2
		New passenger car wiring harness repair kit	Fig 1
30	Install rear engine compartment lining.	If the rear engine compartment lining is incompatible.	AN31.11-P-8080-11LWG
31	Install shielding (16) at right side on underfloor paneling.
32	Add bumper cutout.	Model 253.3 with code 772 (AMG styling - front spoiler, longitudinal members)	AN31.11-P-8080-02LWH
33	Modify lower bumper section.	Model 253.3 with code 772 (AMG styling - front spoiler, longitudinal members)
34	Install rear switch module upper sensor on rear bumper (70).	Model 253.3 with code P17 (KEYLESS-GO Package)
			AR80.61-P-0012LW
35	Install rear bumper (70).
			AR88.20-P-2200LWG
36	Mount reinforcement (70.3) onto rear bumper (70) and fix in place using expansion rivet (70.4) and screw (70.5).
37	Install rear switch module lower sensor (A87/2) on rear bumper (70).	Model 253.3 with code P17 (KEYLESS-GO Package)
			AR80.61-P-0012LW
38	Install remaining parts.
	Update Vehicle Documentation (VeDoc)
39	Delete special equipment from online vehicle data card.	Model 253.3 (except 253.354) with code 2U1 (Radiator shutters) Code 2U1 (Radiator shutters)
40	Enter special equipment into online vehicle data card.	Code 550 (Trailer hitch)
41	Attach "Trailer hitch retrofitted as per AN31.10-P-8080LWH" under field organization text for design group 31 and design group 88.
42	Attach "Trailer hitch retrofitted as per AN31.10-P-8080LWH" note under field organization texts for design group 50.	If the fan unit has been replaced.
43	Attach "Trailer hitch retrofitted as per AN31.10-P-8080LWH" note under field organization texts for design group 52.	If the engine compartment lining was replaced.
44	Attach "Trailer hitch retrofitted as per AN31.10-P-8080LWH" note under field organization texts for design group 54.	If the fan unit wiring harness or the rear passenger compartment fuse and relay module has been replaced.
45	Connect diagnostic system and select vehicle using vehicle identification number (VIN).
			AD00.00-P-2000-04B
46	Perform variant coding using the software calibration number (SCN).	Central gateway in electronic ignition lock control unit  Trailer recognition control unit  Instrument cluster  Front SAM control unit  Rear SAM control unit  Head unit  Front door control unit  Drivetrain control unit  Model 253.3 with code 218 (Reversing camera), model 253.3 with code 501 (360° camera) Camera cover control unit  360° camera control unit
47	Disconnect diagnostic system.
			AD00.00-P-2000-04B
	Check
48	Perform function test of ball neck and light signals on trailer hitch socket.		AN31.10-P-0008-01LWG

Fig 1: Identifying New Passenger Car Wiring Harness Repair Kit (220 589 04 99 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Wiring Harness Repair Kit, Basic (000 589 13 99 00)

Courtesy of MERCEDES-BENZ USA