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Navigation System - DVD Read Error
91 Navigation plus (RNS-E) DVD read error
91 10 38
2015832/4
July 12, 2010
Supersedes Technical Service Bulletin Group 91 number 08-149 dated December 3, 2008 for reasons listed below.
Affected Vehicles
Condition
One or more of the following are present:
^ Error message on display: CD/DVD is unreadable. Please check the CD/DVD.
^ The navigation unit responds sluggishly or the route does not calculate.
^ The navigation map freezes during route guidance.
Technical Background
Possible causes are:
^ Incorrect navigation DVD inserted.
^ Incorrect region code stored in Adaptation channel 10.
^ Dirty or damaged navigation DVD.
^ Dirty or damaged navigation DVDs can lead to reading problems. All DVDs must be handled with care and stored in the protective case when not
inserted in the DVD drive.
^ Condensation on DVD - particularly in cool and damp weather. After a warming-up period of about 10 to 15 minutes, the system again operates
correctly.
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^ Defective navigation unit.
Production Solution
Improved navigation hardware.
Service
Tip: When testing with other navigation DVDs, the same disk version should be used. If a different version DVD is inserted, a software update
(which cannot be stopped) begins automatically. Check the current software version (CAR function button >> VERSION control button).
Proceed as follows:
1. Check the navigation DVD to ensure the correct disk is being used.
2. Check the value of Adaptation channel 10, it must be set to 0 for Northern hemisphere.
3. Check whether the navigation DVD is dirty, scratched or has fingerprints or condensation.
4. Clean dirty DVDs with a soft, lint-free cloth. Wipe DVDs in a straight line from the center outward (never in circular movements).
5. If there are circular scratches on the DVD, insert a blank CD into the drive for testing. The number of disk revolutions during the read attempt is
enough to test whether a different DVD would also be scratched.
6. Use a known good DVD of the same version from a different vehicle.
7. Perform the DVD read test as described below.
DVD read test
Use Vehicle Self Diagnosis with the VAS tester for the following:
1. Read measured value block 10 in the navigation (address word 37):
2. Perform a DVD reading test with Adaptation channel 65. Perform several tests by selecting value 1 (short test) or 2 (reading test in random DVD
positions). At the end of a successful test, 0 should be displayed.
3. Attach a photo when sending in a faulty part, especially if the complaint can be reproduced but the measured value blocks show no problem.
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Warranty
If replacing the Navigation plus send in the diagnosis protocol, the reading test results and photos of the displayed fault(s) on the navigation screen.
Dirty or damaged DVDs owned by the customer are excluded from warranty.
If both the Navigation plus and the DVD have to be replaced, send them in together.
Required Parts and Tools
Additional Information
The following Technical Service Bulletins should be referenced when completing this procedure:
^ 2010868, 91 Navigation plus, various complaints
^ 2013021, 91 Navigation plus (RNS-E) route guidance activates by itself
^ 2013790, 91 Navigation DVD can't be ejected
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
