NTB20-048

2020 ALTIMA; BLIND SPOT WARNING AND/OR REAR CROSS TRAFFIC ALERT NOT FUNCTIONING PROPERLY IF YOU CONFIRM ï‚· The customer states the Blind Spot Warning indicator does not illuminate while driving when there is a vehicle in one of the detection zones (outlined in green in Figure 1). Or ï‚· The customer states the Rear Cross Traffic Alert indicator does not illuminate while in reverse and a car is approaching the side of the vehicle near the rear bumper. Or ï‚· Unavailable Side Radar Obstruction is displayed in the Vehicle Information Display. HINT: DTC C1E11-97 or C1E91-97 (SENSOR BLOCKAGE, SOW DETECTS A BLOCKAGE) may be stored as a past DTC. If any DTCs other than C1E11-97 or C1E91-97 are stored, diagnose those DTCs before proceeding with this bulletin. ACTION 1. Confirm the current ICC/ADAS 2 part number. 2. Reprogram the ICC/ADAS 2 and perform the blind spot warning action test, if applicable.