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MRR Online Calibration Error
#1
Hi


My FO keeps showing the same faults again and again after a reset: CMRR RL and CMRR RR, specifically MRR Online Calibration Error (DTC C228E00)
Unfortunately, I can’t calibrate the CMRR/CMRR because this function is not enabled/activated in my system.

In addition, while driving, the yellow blind-spot warning indicators in the driver display keep lighting up repeatedly. 
This is very distracting and especially bothersome at night during driving. 

Please help me resolve this issue.
FOO EZ 10.2023 OS V.2.5 
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#2
Hi there,

before we can provide a precise recommendation, we require a complete DTC report for the entire ADAS system, including:

- FCM (Front Camera Module)

- Hydra

- All 5 MRR units

Based on these DTC reports, we can analyze the situation in detail and proceed in a targeted and structured way.

Please share the reports once available, and we’ll take it from there.
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#3
(02.02.2026, 23:16)Freesker Support Wrote: Hi there,

before we can provide a precise recommendation, we require a complete DTC report for the entire ADAS system, including:

- FCM (Front Camera Module)

- Hydra

- All 5 MRR units

Based on these DTC reports, we can analyze the situation in detail and proceed in a targeted and structured way.

Please share the reports once available, and we’ll take it from there.

Hi,
Here is my DTC report. 
.pdf   report 23.01.26.pdf (Size: 112,03 KB / Downloads: 6)   
This is from when I driving for 1 days and covered 60 km. 
In addition, there were also many bus disruptions in other areas.
FOO EZ 10.2023 OS V.2.5 
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#4
I can't detect any active faults in the ADAS system. Is it possible that various control units were removed and then someone tampered with the vehicle?
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#5
No,
In this report it isn’t active at the moment, but you can see which fault code is stored (history). It becomes active intermittently.
FOO EZ 10.2023 OS V.2.5 
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#6
It is important to actively recognize the error; historical errors can also lead to misinterpretation if you do not inspect the car yourself.
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#7

.pdf   report (18).pdf (Size: 27,91 KB / Downloads: 4)
FOO EZ 10.2023 OS V.2.5 
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#8
Hi there,

Indeed, MRR_RR and MRR_RL lack intrinsic calibration. This can be caused by the general replacement of a new MRR without online calibration or by faulty conditions.

Has there been a change in the positions of these two?

Best regards,
Freesker Team
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