The following is a technical service bulletin from Hyundai for the replacement and adjustment of the front radar unit in certain 2021-2022MY Elantra models.
Overview
This bulletin is for customers experiencing a warning light with DTC C1620, caused by a distorted signal due to internal contamination of the front radar reception antenna.
Applicable Vehicles
The following 2021-2022MY Elantra models are affected:
– 2021-2022MY Elantra (CN7) equipped with front radar and produced from 09/12/2020 to 11/19/2021.
– 2021-2022MY Elantra (CNZA) equipped with front radar and produced from 09/25/2020 to 01/19/2022.
Parts Information
The affected part is the Front Radar Unit 99110-AAOOOQQH (CN7, CNZA).
Service Procedure
The service procedure includes replacement of the front radar unit, alignment of the mounting angle, and calibration of the system.
It is recommended to follow the procedures outlined in the Shop Manual and to refer to the latest Warranty Digital Documentation Policy for requirements.
Manual:
Download: Hyundai Technical Service Bulletin: FRONT RADAR REPLACEMENT & ADJUSTMENT FOR DTC C1620
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