Remove/install steering wheel heater electronics (SHE) - AR46.11-P-0003V

MODEL 171.4 (except 171.473) with CODE (443) Steering wheel heater 

Fig 1: Identifying Steering Wheel Heater Electronics (SHE) Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury.  Injuries may result when performing testing or repair work on airbag or emergency tensioning retractor units.	Store airbag units with deployment side facing up; do not expose to temperatures greater than 100°C. When working on these units, disconnect the power supply.
1	Loosen driver airbag unit (1) and place on steering wheel (3) with electrical connectors at driver airbag squib 1 and driver airbag squib 2 still connected.		AR91.60-P-0660V
2	Disconnect electrical connectors (2).
3	Remove steering wheel heater electronics (A74) from support at steering wheel (3).	Installation:  Make sure that steering wheel heater electronics (A74) are seated correctly in support at steering wheel (3).
4	Install in the reverse order
5	Perform function check