# Service bulletin ITB21\-012

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: 10195476
- Published by NHTSA: 2021\-06\-09
- Manufacturer's number: ITB21\-012
- Manufacturer's date: 2021\-05\-24
- NHTSA component: FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM

## NHTSA's summary

INCORRECT FRONT/REAR SONAR SENSOR OPERATION SERVICE INFORMATION Sonar sensors use ultrasonic sound waves to detect objects, and determine short range distance to those objects. If a sonar sensor’s visible surface has been damaged or is partially, or totally, obstructed by mud/dirt, road debris, bugs, snow or ice, the sound waves that are being transmitted can be muted, redirected, absorbed, and not received. Possible causes of incorrect sensor \(sonar sensor\) operation: • Object not within the detection range of the sensors. • Sensor range sensitivity setting is set too sensitive, or not sensitive enough. • Objects that cannot be detected by the sensors. • Foreign material \(mud/dirt, road debris, bugs, snow or ice, etc.\) attached to any of the sensors, or their surroundings. • Damage to one or more of the sensors, or the area around the sensors. • Items installed around one or more sensor \(e.g. Accessories or bumper protectors, etc.\). • The vehicle ride height has been altered.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10195476-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10195476-9999.pdf)

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

## Components

Driver assistance, Electrical system

## Vehicles listed

- INFINITI INFINITI

JSON: [/v1/bulletins/10195476](/v1/bulletins/10195476)

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