Route guidance through voice output, function - GF82.61-P-2011GQA

MODEL 164.1 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08 model refinement package 

MODEL 164.1 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08 model refinement package 

MODEL 164.8 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08 

MODEL 164.8 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08 

MODEL 251.0 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08 

MODEL 251.0 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08 

MODEL 251.1 with CODE (525) MB Audio 50 APS radio as of model year 09/YoM 08 

MODEL 251.1 with CODE (511) Audio 50 APS with DVD changer as of model year 09/YoM 08 

Function requirements 

• Status "Circuit 30 ON" or "Circuit 15R ON"
• The Auto pilot system (APS) is operating properly
• Up-to-date navigation data available
• Vehicle is underway and destination-oriented navigation is active

General 

The route guidance through voice output function is an assistance function that assists the driver without distracting him from the traffic. The destination-oriented navigation of the navigation system is primarily supported by voice outputs with the following information:

• Direction information
• Name of road onto which the next turnoff should be made

The voice output of the navigation system features the following languages:

• German
• English
• French
• Spanish
• Portuguese
• Italian
• Dutch
• Swedish
• Danish
• Russian
• Turkish

Additional voice messages are emitted at the start of the route calculation, when an intermediate stop is reached or when the destination is reached.

Operating instructions 

The radio and navigation unit (A2/56) is operated using the following components:

• Using the radio and navigation unit buttons
• Using the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111)

When voice output is active the announcement volume can be adjusted using the following components:

• Using the rotary switch on the radio and navigation unit
• Using the buttons + and - for setting specific functions and volume control (S111s1) on the multifunction steering wheel (MFL)

The audio output volume is dynamically aligned with the noise level inside the vehicle (speed-dependent volume control (SDV [GAL])).

A special note is given during voice output in the following cases:

• Destination in area not accessible by car
• Destination in area with restricted traffic access
• Route via ferry
• Route via toll road

Function sequence 

The radio and navigation unit combines the word segments into complete instructions or information by means of the integrated navigation processor during a voice output and generates low frequency (LF) signals. If required, the low frequency signals are forwarded via the Media Oriented System Transport (MOST) to the amplifier for sound system (N40/3), with code (810) Sound system, where they are then amplified.

The low frequency signals are sent from the amplifier for sound system to the following speakers via direct lines:

• Left rear door speaker (H4/3)
• Right rear door speaker (H4/4)
• Left front door speaker (H4/5)
• Right front door speaker (H4/6)
• Center cockpit speaker (centerfill) (H4/27)
• Left front door tweeter (H4/33)
• Right front door tweeter (H4/34)
• Left rear door tweeter (H4/35)
• Right rear door tweeter (H4/36)
• Left rear surround speaker (H4/54)
• Right rear surround speaker (H4/57)

The audio signal for the subwoofer (H4/29) travels from the radio and navigation unit to the amplifier for the sound system via MOST and from there, via direct lines to the subwoofer amplifier (N40/9) and then to the subwoofer speaker.

In vehicles without code (810) Sound system, the LF signals are amplified in the radio and navigation unit and output over the following speakers via direct lines:

• Left rear door speaker
• Right rear door speaker
• Left front door speaker
• Right front door speaker
• Left front door tweeter
• Right front door tweeter
• Left rear door tweeter
• Right rear door tweeter

	Electrical function diagram for route guidance by voice output (APS), function	Model 164	PE82.61-P-2052-97MAA
		Model 251	PE82.61-P-2052-97RAA
	Instrument cluster, component description	A1	GF54.30-P-6000GM
	Radio/navigation unit, component description	A2/56 With CODE (525) MB Audio 50 APS radio	GF82.61-P-4111GQ
		A2/56 With CODE (511) Audio 50 APS with DVD changer	GF82.61-P-4111GQA
	Sound system amplifier, component description	N40/3 With CODE (810) Sound system	GF82.62-P-6003GQS