Replace HERMES Control Unit (Code: VS2SIMKOW, Acc. No.: 54 963 42) - SM82.95-S-0028A

Model 447.603/605/703 13 as of 153001 up to 913143 with code JH3 (Communication module (LTE) for digital services) with code ZU8 (National version for USA) 

Courtesy of MERCEDES-BENZ USA

Shown on model 447.6/7 

Courtesy of MERCEDES-BENZ USA

Shown on model 447.6/7 

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Notes on carrying out repair work in the vehicle interior		AH68.00-D-0001-01KOS
	Notes on programming control units		AH54.21-P-0001-03Z
	Notes on SCN coding of control units		AH54.21-P-0004-01X
	Check
1	Check if vehicle is affected by measure.	For authorized Mercedes-Benz service partners, only the entry in the "Extended VEGA Application" (EVA) system, in the "Current" tab is decisive. There is no need to also check the affected vehicles in the workshop information system (WIS) or vehicle list.
	Installing
2	Install the 12 V charger.
		A sufficient power supply for the on-board electrical system battery must be guaranteed throughout the entire work procedure. Otherwise any undervoltage that occurs may damage the control units Follow the operating instructions for the 12 V charger Use the 12 V charger to ensure an adequate voltage (min. 12.5 V) for the on-board electrical system battery.	AR54.10-S-1127E
3	Install vehicle diagnosis system.	If diagnostic system is not yet attached.
		Further information about "Retail Data Storage" is available in the XENTRY Portal at the following path: XENTRY Portal → Diagnosis & Telematics → XENTRY Update Service & Retail Data Storage → Overview Always use the latest XENTRY Diagnosis software release with all available add-ons It is absolutely essential to precisely follow the operation steps as described in the vehicle diagnosis system If XENTRY Diagnosis is already connected to vehicle, → continue with operation step 4.	AD00.00-S-2000-04E
	Commissioning of control unit
4	Perform commissioning of HERMES control unit (N112/9) using vehicle diagnosis system.
	Programming of control units	To do this, select the following menu items: Quick test view → N112/9 'Telematics services' (HERMES) communication module (code: JH3) → Adaptations → Commissioning → Control unit replacement with initial startup of new control unit It is absolutely essential to precisely follow the operation steps as described in the vehicle diagnosis system.	AR54.21-S-0014E
	Remove
5	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).
6	Remove left cover under the dashboard.
		Model 447.6/7 with code LC7 (Front footwell illumination) with code ZU8 (USA national version)	AR68.10-S-1500E
7	Unhook air duct from instrument panel.	If installed.
8	Disconnect electrical connectors (1).	To do so, release U-shaped striker and detach electrical connectors (1).
9	Release front and rear lock on holder (2) and take HERMES control unit (N112/9) out to one side.	Dispose of removed HERMES control unit (N112/9) properly. Observe the applicable legal requirements and specifications of the relevant country.
	Install
10	Install new HERMES control unit (N112/9) on holder (2) and lock.	The new HERMES control unit (N112/9) is commissioned in operation step 14.
11	Connect electrical connectors (1).	To do so, lock U-shaped striker and pull in electrical connectors (1).
12	Install air duct on instrument panel. If installed.
13	Install left cover below the instrument panel.
		Model 447.6/7 with code LC7 (Front footwell illumination) with code ZU8 (USA national version)	AR68.10-S-1500E
	Commissioning of control unit
14	Perform commissioning of HERMES control unit (N112/9) using vehicle diagnosis system.
		To do this, select the following menu items: Quick test view → N112/9 'Telematics services' (HERMES) communication module (code: JH3) → Adaptations → Commissioning → Control unit replacement with initial startup of new control unit It is absolutely essential to precisely follow the operation steps as described in the vehicle diagnosis system The software update in the HERMES control unit (N112/9) can take several hours.  Do not yet remove vehicle diagnosis system.	AR54.21-S-0014E
	Check
15	Perform function test of HERMES control unit (N112/9) using XENTRY Diagnosis.	To do this, select the following menu items: Quick test view → N112/9 'Telematics services' (HERMES) communication module (code: JH3) → Actuations → Self-test The operation steps in XENTRY Diagnosis must be followed precisely at all times.
16	Perform function test of emergency call system.	To do so, switch on ignition without touching brake pedal and check whether "SOS NOT READY" warning message in instrument cluster disappears automatically Model 447.6/7 with code E3C (Audio 30) or code EA4 (Audio 40) or code EN6 (Audio 10) or code EN7 (Audio 15) On these vehicles, switch on the radio and check if "SOS NOT READY" appears in the central display of the radio, and then check if shortly after this "SOS NOT READY" automatically disappears from the central display.
	Remove
17	Remove vehicle diagnosis system.
			AD00.00-S-2000-04E
18	Remove the 12 V charger from vehicle.
			AR54.10-S-1127E