In my other thread about retorifts, the topic of retrofitting the BSM system appeared, so I decided to start a new thread to organize the knowledge on this subject

Useful links:
- Electronic Wiring diagrams: https://www.kolhosniki.ru/toyota
- Repair manual: https://www.lexunx.com/ (not complete, only hybrid engine)
- Another repair manual: http://zatonevkredit.ru/repair_manua...QBY9IUPtEGo5fi (huge database, with almost every Toyota/Lexus)
- Japanese shop with really nice parts catalogue: https://www.amayama.com/

Useful diagrams:



Parts numbers:
- Pre-facelift radar bracket (LH&RH) 65565-30010
- Pre-facelift radar (LH&RH) 88162-0W170 or 88162-78010 or 88162-78011
- Pre-facelift righ sensor wire 82183-78020
- Pre-facelift left sensor wire 82181-78030

Links to succesful retrofits in other Toyota models:
- RAV4 5G: https://www.drive2.ru/l/662912603890137699/
- RAV4 5G: https://www.drive2.ru/l/685860785951359394/

 

@conrado I agree! The hijack of your Parking Sensors thread is partly my fault! My apologies!! I should have suggested starting a new thread on the BSM retrofit topic.

@TomekR Sorry for the delay in responding! I have the BSM’s partly retrofitted to my car. Still the door mirrors and door wiring harnesses to do. On first power-up without the door mirrors fitted it showed a malfunction on the instrument cluster information display and logged 2 fault codes, C1AB0 & C1ABE. I turned off the BSM dashboard control switch and the instrument cluster information display returned to normal. I’ve left the dashboard control switch turned off and had no negative effects with the car.

 

Hi gents,
Yeah, good idea with the new thread, indeed.

@IanS62 thanks for the info, it's good to know that switching BSM off makes it 'invisible' to the car. Collecting the used parts needed is not that hard except for the mirrors, which are hard to find and very expensive.
That's why I'm keeping my fingers crossed that you manage to launch chinese mirrors.

@conrado said on the other day that calibration is not a rocket science :-)
Seems like it, even though the work seems to be quite demanding:
here how to DIY a calibration 'device': https://www.tacomaworld.com/threads/...lector.762920/
and here the actual procedure: http://zatonevkredit.ru/repair_manua...QBS7ubqUqivBja (now can see in Russian only but so found English version earlier - attached)

Ending section of the attached document describes sensor mounting validation, which scares me a bit :-) I thought just to mount it somehow and the calibration would do the rest.
On this movie radar can be seen

and how to remove the bumper.

Btw, I placed an order on Amayama and they cancelled the multi-switch (with BSM button) with a note "Supply restrictions". Maybe we don't know that the buttons are also used in missiles ;-)
Luckily, used ones are available on Ovoko.

I have one more question to you both: the official installation guide says "Do not drop the blind spot monitor sensor. If it is dropped, replace it with a new one."
As we buy them used ones, they could be broken, so I think of checking them in 'fast mode' just by connecting them without mounting i.e. disconnect existing wire harnesses no 1, connect the one for BSM with sensor connected and then in Techstream check them. The connector is very easy to access, just under the floor, and no need for bumper removal. Also the button multi switch could be connect to the vehicle without mounting, I guess (seems that relevant wiring could be access from the side).
What do you think ?