# Service bulletin NTB20\-048

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10178234
- Published by NHTSA: 2020\-08\-09
- Manufacturer's number: NTB20\-048
- Manufacturer's date: 2020\-07\-07
- NHTSA component: ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS; EQUIPMENT

## NHTSA's summary

2020 ALTIMA; BLIND SPOT WARNING AND/OR REAR CROSS TRAFFIC ALERT NOT FUNCTIONING PROPERLY IF YOU CONFIRM • 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 • 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 • 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178234-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178234-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Electrical system, Equipment and accessories, Blind spot detection

## Trouble codes named

C1E11, C1E91

## Vehicles listed

- 2020 NISSAN ALTIMA

JSON: [/v1/bulletins/10178234](/v1/bulletins/10178234)

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