Chris.ac

Check your tyre pressures are equal across all wheels. If ABS ecu detects a large enough delta measurement between wheels, it will throw an error. The fact you have ABS, VCS (Skid control) coming on seems related, do you have standard 16/17" wheels?

2 options, a BT OBD2 dongle that is Japanese market compatible, and an app on phone/tablet (Carscanner), or a VCI cable and techstream software (Ebay sell these for under £50 - it can adjust all the user servicable settings, read all the diagnostic codes and program keyfobs) Cheapest route is the OBD2 dongle, should cost under £20, the android software can read codes, and set the options, you lose the keyfob programming option, but how many times will that be used. I have both, I leave the dongle attached, so can connect anytime and see fuel trim levels, etc.

it can be changed to a single bleep on open and on close, rather than the beep beep beep beep sound.

I don't think you need to remove the entire console to get to the bulbs, just the plastic lens. It should prise out using a guitar pick or plastic tool or similar.

the parking sensors utilise the blue square gvif connector to the headunit via the IPA ECU to provide visual feedback. The IPA ECU also sends an o/p to the amplifier and uses the drivers side speaker or centre speaker where available to provide the beeps and the japanese voice that yells at you. When I was experimenting, by disconnecting the GVIF connector, the headunit reverted to a different display for the sensors, and the sound persisted, so there may be some data sent via the canbus.

Yep, unfortunately in Japanese, I found those last year, before tracking down the english owners manual. Thanks for the reminder of that link though

I have ordered from amayama, was painless, and for the parts I needed (part of dashboard trim, and new light stalk) it was cheaper than other sites.

how many 'clicks' did you press it down?, mine holds fine.

shows all plugs and wiring. following shows just the main plug with reverse, parking brake and speed sense

front cam actually goes to a separate intelligent parking assistant computer, from there it uses the blue digital connection. you need a separate unit that converts this to a standard phono connector

I posted wiring on a thread a couple of days ago

let's be thankful is a Toyota, my friends Merc c class is always throwing fits and error messages, latest thing is the reverse cam has stopped functioning, and it has a motorized cover on it so will be probably the cost of a set of tyres to replace

no, gen 1 is a single panel, and because it's held by two screws on lower rim is not possible to remove without damage, whilst door closed. 20 series has 4 removable panels to access the bulbs and lock

on the rear panel, there is a panel that is removed to access the manual override with a screwdriver

I suppose you cannot access the lock panel cover, if bed in way?

Checked on amayama.com, part numbers, searched for them with uk stock, or you could go with importing via amayama: https://www.buycarparts.co.uk/oen/4243158020 https://www.buycarparts.co.uk/oen/4351228190 (amayama search here: https://www.amayama.com/en/genuine-catalogs/epc/toyota-japan/alphard/GGH25W/63675/chassis) Thats the front/rear discs, the pads are common across many toyota, but use amayama to get the part numbers.

so you have a GGH25?

I PMed you a link to my google share, with the wiring diagram and manuals

Steering control is socket D pins 23,24,25)

I don't want to get struck with a copyrght complaint, so have complied with sharing less than 20% - this shows the socket letters and pin numbers. Interestingly, should be able to use the inbuilt microphone, with some careful testing (socket D pins 4,5,6,7,20)

it should do, the cameras will be on the blue connector in car, the box converts the video to regular phono lead, so it should show what you would ordinarily see - Not sure if it is interactive though, as I dont see how it will communicate back the other way. the steering control is 3 wires on the main power plug, so this should be fine too