NHTSA ID Number: 10191537
Manufacturer Communication Number: SA-003-21a
TSB/Document Date: 2021-05-04
Summary
Some customers may complain about the following symptoms occurring when driving without anything ahead (no metallic object reflects the radar wave such as a vehicle ahead, an oncoming vehicle, a road sign or a guard rail). While using Mazda
Radar Cruise Control (MRCC), the MRCC cancels by itself. When MRCC is not in use, Safety and Driver Support Systems Temporarily Disabled. Front Radar Obscured. message appears in the instrument cluster / Remove dirt on the front radar sensor message appears in the center display and related i-ACTIVSENSE functions stop working.
BULLETIN NOTES
This service alert supersedes the previously issued service alert listed below. The changes are noted in Red
text.
Previous Service Alert
Date(s) Issued
SA-003/21
01/15/21
APPLICABLE MODEL(S)/VINS
2019-2021 Mazda3 Japan built with VINS lower than JM1BP******176406 (produced before April 02, 2020)
2019-2021 Mazda3 Mexico built with VINS lower than 3MZBP******207228 (produced before Sept 29, 2020)
2020-2021 CX-30 with VINS lower than 3MVDM******218570 (produced before Sept 29, 2020)
DESCRIPTION
Some customers may complain about the following symptoms occurring when driving without anything ahead (no
metallic object reflects the radar wave such as a vehicle ahead, an oncoming vehicle, a road sign or a guard rail).
• While using Mazda Radar Cruise Control (MRCC), the MRCC cancels by itself.
• When MRCC is not in use, “Safety and Driver Support Systems Temporarily Disabled. Front Radar Obscured.”
message appears in the instrument cluster / “Remove dirt on the front radar sensor” message appears in the
center display and related i-ACTIVSENSE functions stop working.
Page 1 of 3
04/30/2021 10:31 AM tlawrenc
This is caused by the front radar (under specific road conditions) detecting a false error as if the radar sensor is dirty,
resulting in cancellation of the MRCC. (no metallic object reflects the radar wave such as a vehicle ahead, an oncoming
vehicle, a road sign or a guard rail).
REPAIR PROCEDURE
1. Verify customer concern.
2. Check for DTC's.
Are any DTC's stored?
• Yes: This service alert does not apply. Go to MGSS DTC diagnosis.
• No: Go to next step.
3. Check if the front radar sensor or forward sensing camera is dirty.
Is the front radar sensor or forward sensing camera dirty?
• Yes: Clean the front radar sensor and/or windshield, then go to step 5. This information is available for the
customer in the Owner's Manual -> When Driving -> i-ACTIVSENSE -> Front Radar Sensor.
• No: Go to next step.
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04/30/2021 10:31 AM tlawrenc
4. Check with customer if MRCC was canceled without anything ahead (same as Description).
Was the customer driving without anything ahead?
• Yes: Replace the front radar sensor, then go to next step.
• No: No repair is needed at this time.
Document your inspection results on the repair order.
Mazda will take note of the concern and all information gathered will be forwarded for research.
○
○
5. Verify repairs.
PARTS INFORMATION
Parts Number
Description
Qty.
Notes
B0N2-67-XA0-D
Sensor, Radar-Front
1
Mazda3 (Japan built)
BDTS-67-XA0-D
Sensor, Radar-Front
1
Mazda3 (Mexico built) and CX-30
BCKA-50-345
Nut
3
CX-30 only
Page 3 of 3
04/30/2021 10:31 AM tlawrenc
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TSB/Document ID: SA-003-21a
Replacement Service Bulletin Number:
MFR Communication Date: 2021-04-27
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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