2014-2015 Acura MDX, RLX, and TLX Service Manual

AcuraLink System Status Indicator is Red and DTC B1403 Will Not Clear

The AcuraLink system status indicator changes from green to red and DTC B1403 (telematics GPS receiver error) will not clear.

Possible Causes

The TCU (telematics control unit) has an intermittent failure that causes a loss of GPS location.

Corrective Action

Inspect the TCU and, if necessary, replace it.

Note: This bulletin applies to 2014-2015 Acura MDX, RLX, and TLX models with navigation systems.

Manual:

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AcuraLink System Status Indicator is Red and DTC B1403 Will Not Clear