C1203 vehicle information mismatch, EPB

[avensis2022]

Hello,

after installing of used EPB error code C1203 appeared. EPB works correct, Avensis 2011, M/T.

Does anyone know solution for this?

BR

[flash22]

It needs the epb to be reset, you also need to do a clutch/brake and yaw zero point calibration

it can be done in techstream or with a higher end scan tool

[avensis2022]

Thanks for replay.

The calibrations were done but the C1203 remains. 

[flash22]

Is it the exact same part number as the original ?

[avensis2022]

Yes, original was 4630005010 and dealer told that correct part number for used must be 5630005011.

 

 

14 hours ago, flash22 said:

Is it the exact same part number as the original ?

 

[flash22]

The ecu may need to be updated

[Konrad C]

This may not be related, because my car still runs with the original unit, but may useful for information purposes. When I had my clutch replaced, after few miles the next day, a warning appeared on the screen to 'check parking brake system'. Auto release was disabled, I could use the switch to engage and release the parking brake. At the time I couldn't find the actual problem in detail with my diagnostics, and I had an older version of Techstream that didn't work properly. I used an auto electrician that traced the problem. Here is the interesting thing - he removed the warning with his professional diagnostics, then located the fault with diagrams. That was when I removed the air filter unit to access the gearbox below, to find the connector hanging from the gear position sensor! The point is that so long as all connections are good, then it is down to good auto electrician with the right equipment to diagnose, fix or code systems, like Diagnostic Dan and LM Auto on YouTube. These guys match chassis codes of the donor part, similar to coding injectors and TPMS.
Here the fix for poorly secured gear position sensor -  

Later when taking some photos for another member who suffered the same issue, I discovered oily mess, so cleaned the area, checked, secured and place a dust cap on the bleed nipple. I have had to do follow up work like this after mechanics, who tend to rush!

If there is a subject relating to Avensis T22 1.8 7AFE or T27 1.8 Valvematic both manual, search my profile in case I have a post on the subject you are interested in. Google the issue and include Konrad c. That is how I find my own past posts without having to trawl through lots of posts.   

[avensis2022]

Many thanks Konrad for answer. The failure of the original EPB was moisture. New part including work costs is half of car market price.

Does anybody solved this issue using Techstream or other high level device? If yeas, how to do that?

[MatGO]

I developed a device that eliminates compatibility issues (fault C1203) and the parking brake notification on the dash after installing a second hand unit. It has been tested with 82164-0501x modules, and it is possible to use any module from the same generation, except when mixing AT and MT variants. I am still working on a solution for AT/MT compatibility, which will be available soon. The device is integrated into a plug and play wire harness, which can be easily installed (or removed) within a few minutes in the car. It is not necessary to remove or disassemble the brake module at all.

[jaro00]

On 8/11/2024 at 9:51 AM, MatGO said:

I developed a device that eliminates compatibility issues (fault C1203) and the parking brake notification on the dash after installing a second hand unit. It has been tested with 82164-0501x modules, and it is possible to use any module from the same generation, except when mixing AT and MT variants. I am still working on a solution for AT/MT compatibility, which will be available soon. The device is integrated into a plug and play wire harness, which can be easily installed (or removed) within a few minutes in the car. It is not necessary to remove or disassemble the brake module at all.

 I have replaced a faulty brake 46300-05010 with an older 46300-05010, after pairing in the service the toyota works normally but pops up error C1203, the dashboard error light is on, the diagnostics detects it is from a right hand drive vehicle. SW and FW versions are the same.  My car has a left hand drive and the part number 46300-05010 claims it doesn't matter if it's left or right hand drive.  Can you please advise how this can be solved?

[MatGO]

9 minutes ago, jaro00 said:

 I have replaced a faulty brake 46300-05010 with an older 46300-05010, after pairing in the service the toyota works normally but pops up error C1203, the dashboard error light is on, the diagnostics detects it is from a right hand drive vehicle. SW and FW versions are the same.  My car has a left hand drive and the part number 46300-05010 claims it doesn't matter if it's left or right hand drive.  Can you please advise how this can be solved?

All EPB modules have the exact same identifiers, making it impossible to determine compatibility before connecting the module to your car and checking for the presence of the C1203 fault. Each EPB is paired with the car during the first initialization. If the car is not exactly the same as the one registered then EPB will trigger C1203.

I can offer you a module I developed to solve this. It is plug and play and easy to install, with no need to disassemble the EPB module. Send me a PM for more details

 

[avensis2022]

I installed the device developed by MatGo and it solved the issue with pop up error code C1203 (vehicle information mismatch). 

[Scott23]

I can happily confirm that the module the user MatGo is offering has worked! It took less that 10 minutes to complete the whole process. I replaced the parking break with a second hand one and had the vehicle mismatch error which no one could get rid of (not even Toyota themselves) by using this module it has saved me so much money as the only other fix was to put a brand new EPB in the car. Can’t thank you enough!!