Radar Sensor Module - Long Range Learn: Notes
An ADAPTIVE CRUISE TEMPORARILY UNAVAILABLE message may be displayed on the driver information center if this calibration procedure is required. The B233B Radar Sensor Module - Long Range may have become misaligned.
After replacing and programming the B233B Radar Sensor Module - Long Range, it is necessary to perform a calibration procedure to align the radar. This is indicated by DTC B101E 4B being set as current. Calibration is performed while driving the vehicle with the scan tool connected. Calibration is initialized using a scan tool and the scan tool must remain connected until calibration is complete. During this time the SERVICE DRIVER ASSIST message will be displayed on the driver information center. Once the procedure is complete, the message will turn off and normal operation will resume.
Calibration is not required if the existing B233B Radar Sensor Module - Long Range was only programmed. Calibration needs to be conducted if the B233B Radar Sensor Module - Long Range was replaced or removed and re-secured.
If calibration is not successful, it could be due to improper driving environment, radar and bracket assembly bent out of position, or incorrect radar mounting. A typical driving environment is usually sufficient to calibrate the module within 10 - 30 minutes. Visually inspect for damaged, bent, or broken B233B Radar Sensor Module - Long Range bracket. Brackets out of level more than 2 degrees will not calibrate or self-learn. Discuss with the customer about vehicle history and possible past accident. Replace bracket if damaged.