Navigation Sys. - 'Universal Media Interface' Faults
Navigation 20: Route calculation takes a long time, implausible route calculation, implausible navigation instructions in tunnels
Topic number LI82.85-P-045552
Version 4
Design group 82.85 Navigation and communication systems (CNS, ICS, COMAND, FleetBoard)
Date 03-10-2010
Validity Model 204 with Audio 20 (code 510 or 523) and retrofitted Navigation 20
Reason for change Replacement part for USA/CAN market added
Reason for block
Complaint:
The "Navigation 20" (formerly called UMI) retrofit solution for navigation available through Mercedes Benz Accessories exhibits the following fault
profiles in navigation mode:
1. Recalculation of route takes a very long time.
2. Implausible route suggestions by classification (cheapest, quickest, shortest route).
Mercedes-Benz A220 2020 Page 377
3. Routes to roads classified for rescue vehicles cannot be calculated.
4. Implausible navigation instructions in tunnels.
Cause:
Software error in navigation module.
Remedy:
Perform software update on "Navigation 20" control unit (see attachment for procedure).
Note:
When the new software is installed, a map update must also be performed.
Attachments
Symptoms
Parts
Work units
Validity
Mercedes-Benz A220 2020 Page 378
Mercedes-Benz A220 2020 Page 379
Mercedes-Benz A220 2020 Page 380
Mercedes-Benz A220 2020 Page 381
Attachment - Instructions for software/map update USA
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