Remove/install hands-free system control unit - AR82.70-P-8970TA

MODEL 211.2 up to 1.6.08 except CODE (809) Model year 2009 with CODE (349) E-call emergency call system with CODE (380) Preinstallation for telephone "Cell phone", complete with CODE (381) CP-Light telephone system with CODE (382) MB telephone "Cell phone" in armrest with CODE (383) CP-High telephone system with CODE (384) Telephone preinstallation for USA with CODE (385) Telephone preinstallation for Canada with CODE (386) Preinstallation for telephone "Cell phone", UPCI [UHI] system with CODE (388) Telephone "Cell phone", UPCI [UHI] system 

Fig 1: Identifying Hands-Free System Control Unit Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Remove front section of load compartment floor		AR68.20-P-4811T
2	Disconnect electrical connector (1)	To avoid damaging the fiber optic cable, do not kink fiber optic cable, route over sharp edges or bend in radii smaller than 25 mm. Carefully release locking mechanism of electrical connector (1), risk of breaking locking mechanism.
3	Cover fiber optic cable	The fiber optic cable is integrated in electrical connector (1).	AR82.95-P-0005-01A
4	Unclip wiring harness (2) from carrier plate (3) and lift until bolt (4) is accessible
5	Unscrew bolt (4)
6	Remove hands-free system control unit (A35/1)
7	Install in the reverse order