Chris.ac

You can get an English pdf Manual from https://vaug.club/kb/reference/alphard-vellfire-20-english-user-manual-by-nik-dy-izwan-shah/ Give you a chance to get up to speed with the buttons etc.

On 20 series, the speed signal feed to the dials is seperate to the signals running to the other ecus such as cruise, traction control, headunit, abs, auto parking assist. Worst that will happen is the conversion box will fail, in which case you just remove it/replace it.

If you have a laptop capable of running virtual machines, try downloading the preset up tech stream from ih8mud site, no need to bother worth anti virus or fiddling with drivers. https://forum.ih8mud.com/threads/how-to-techstream-in-5-minutes.1034923/

20 series steering controls are 3 wires Gnd, and SW1 and SW2, using resistive differences to determine which keys are pressed. The microphone is situated near the dome lights, but this is unlikely to be connected up to the aftermarket unit - should be easy to do though, as it is just a condenser. Usually aftermarket, they will mount the mic on the steering wheel shroud. I will hazard that they did not connect the right side steering controls to the new headunit, so you only have the leftcontrols working.

In most probability, yes. Easiest way to check, it's rejoice the plastic kick panels on front footwell, look for the pink hoseing, if that has water in, the blockage is at the exit points hidden behind wheel arch trim. If no water, yet further up by popping off trim on a pillar (be careful of airbags) if that the is still clear, it's right in the drain pan up top. How in 2 front corners of the front sun roof, little conduits run to the middle moon roof. The rears are of course right at the back, you can check behind the rear side panels

its based on the Japanese emissions regulations. check your rear window, it might still have the japanese sticker on it that will either state 2000, 2002 or 2005 in its eco declaration. If you have 2000 or 2002, you are out of luck. 2005 is basically euro 4 spec in the eyes of DVLA, so ULEZ compliant

This thread

if it anything like other tablets/phones (which this is basically) the compass needs calibrating by moving and rotating the head unit in a figure of 8 - practically impossible of course.

ANH or ATH (hybrid)?

Totally missed this post, months old! Ath is your model, you need the 3 letters before that. DBA is mine.

You can see the standards changed significantly in 2005, which is why dvla etc seem to struggle to assign the correct euro standard for those facelift alphard 10 series

Hmm. I think their site changed, try. https://www.transportpolicy.net/standard/japan-light-duty-emissions/

Well, when deleting all keys, it should ask you to hold the fob you want to keep up to the start switch, the remaining stored keys get wiped. Then you can add new keys. What concerned me was the instructions I have only said it deleted everything. So I want to be sure before giving advice that may render you unable to start car at all.

Maybe hold off on my instructions. I need to check that its still valid.

Deleted - need to be sure

Yep, like most garages that start making a fuss or noise when they see an alphard, it's just poor training or incompetence. I'm not a merchanic, but I found full diagrams, wiring, diagnostics, parts suppliers; there is really zero excuse for professionals.

Bumper needs unclipping first. http://zatonevkredit.ru/repair_manuals/viewdoc_html/AWI4O_qhU9h2CeTmduUr/AWI4PuJuRvZszzJrlC4U Held on by clips.

Interesting. I only have wiring for early 10 series non hybrid, and 20 series including hybrid, you have the missing link it seems

Well said. Get any mod listed in writing on your insurance document, including wheel rim size changes. I even declared rear fog, as this was not standard placement, even though it uses standard wiring. Underwriter did half laugh, but conceded the point. Inform about towbar, led headlamps etc etc.

I'm not sure what the issue is, it's just a standard resistance based system. Pretty much any android based headunit comes with a learn function - the sole purpose is to measure the resistance as each button is pressed - as long as they connect the 2 switch wires and in some cases, the ground. These dodgy pioneer and alpine systems probably like to sell some overpriced 'adaptor' that is just some proprietary connector, and that is the real problem, they don't usually sell EU spec headunits with jdm connectors.

I'm away camping at moment, but from memory, the stalk just provides a trigger signal for the rear fog to the ecu that then deals with the logic and the o/p to energise the relay. You could tap into the appropriate relay pin if you intend to use an aftermarket switch, that will energise the existing loom to the rear.

Also, you may need to recalibrate the auto levelling. Refer to the following document for the process (The document details the function and config of the electrical systems) https://slideplayer.com/amp/10248235/

Could you confirm that you have the correct HID bulbs fitted, and not aftermarket LED ones? Some of the aftermarket 'upgrades' are heavier at the rear due to heatsinks or fans or additional cabling.

Install caura (android app) once you put in your reg, it will display every emissions based zone in the country, and if your vehicle is exempt. By default, your 2005 alphard did not come with an emissions cert. As it was not manufactured in the EU. The criteria ulez uses by default, it's to classify anything older than 2007 as non compliant, regardless of the fact the 2.4l is used in other compliant Toyotas

there is a drain for the AC condensate at the rear drivers side (the rear AC unit is fitted in the rear right - you will see vents for it)