# Service bulletin 24\-BE\-005H

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: 10252366
- Published by NHTSA: 2024\-04\-02
- Manufacturer's number: 24\-BE\-005H
- Manufacturer's date: 2024\-03\-20
- NHTSA component: FORWARD COLLISION AVOIDANCE

## NHTSA's summary

Certain 2021\~2022MY Elantra \(CN7/CN7A\) vehicles may exhibit a warning light with DTC C1620, caused by a distorted signal due to internal contamination of the front radar reception antenna. Customers may also report other systems related to the front radar being inoperative, such as Smart Cruise Control \(SCC\) or Forward Collision\-Avoidance Assist \(FCA\). Other functions of the Advanced Driver Assistance System \(ADAS\) are not affected. Follow the procedure in this bulletin to replace the affected front radar unit and perform all related adjustments according to Shop Manual instructions.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10252366-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10252366-9999.pdf)

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

## Components

Driver assistance

## Trouble codes named

C1620

## Vehicles listed

- 2021 to 2022 HYUNDAI ELANTRA

## Recalls for the same vehicles and component

- [24V879000](/recalls/nhtsa/24V879000.md), 2024-11-21: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [26\-AD\-001H TSB](/bulletins/11029906.md), 2026-03-07, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; EXTERIOR LIGHTING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: WARNING. Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto\-calibration range may be exceeded while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's balance \(e.g., loading excessively heavy cargo in a specific location of the vehicle, or significant under\-inflation of the tires\). • Specific road conditions affecting the vehicle's balance \(e.g., excessive road crown\) This TSB provides instructions on how to service the vehicle when the front camera related warning light\(s\) are triggered due to system out of calibration \(DTC\_C272246\).
- [22\-01\-038H](/bulletins/10211670.md), 2022-05-10, Service bulletin: BACK OVER PREVENTION. Some 2022 Elantra \(CN7\) vehicles may exhibit one or both of the following conditions: • When driving and the vehicle blind spot collision warning alert sound is on; upon reduction of speed below 10 mph, the warning sound does not turn off. • When backing up/moving in reverse and the rear cross traffic collision audible warning sound is on; upon changing the transmission into Drive, the warning sound does not turn off. This bulletin provides the service procedure to update the left and right BCA \(Blind\-Spot Collision\-Avoidance Assist\) modules software to resolve the condition\(s\) stated above.

JSON: [/v1/bulletins/10252366](/v1/bulletins/10252366)

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