TSB Document:

Affected Component: EQUIPMENT ADAPTIVE/MOBILITY

Summary
When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated. CAUTION: If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to the dealer for repairs.

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Date Published
MAY 24, 2021
NHTSA TSB #
10194759
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