Donald

Just thought I'd update this thread as I found the problem eventually. All the fuses looked visually okay but to make sure, I spent some time checking each fuse in place with the meter and found a 10A fuse that looked fine, but wasn't passing any current. I replaced that fuse and everything works again. I was able to open the tailgate by removing the internal panel, which was handy. The fusebox behind the passenger glovebox was a pain in the ass to access, especially with the meter probes due to the wiring loom being in the way. The micro fuses are difficult to reach and difficult to remove. I wish I'd trained as a gynaecologist 😀 Thank you all for your input. A happy ending....

You can find me on lancerregister as 'Madmac' 😉

Thanks guys, most helpful. I'm new to the Alphard but not new to JDM Imports. I have an Evo 5 Hillclimb car that I have been developing for 20 years with 1000hp, and had a Legnum VR4, Airtrek and Evo 9 GT Wagon for a while as my road cars I'll try and remove the tailgate panel to open it from the inside so it can at least be used. My friend is using the car both as a small van and people carrier I will let you all know how I get on with finding the fault Just out of interest, would the keys need reprogrammed if the batteries have been flat? I believe the car has been sitting in a dry warehouse for a while before he bought it I initially thought because one of the keys briefly worked that it had been locked by remote then unlocked with a different key in the drivers side lock, which doesn't operate the central locking, but that doesn't explain the sliding doors, AFS lamp flashing or the key buzzer not working

Hi Chris, thanks for your reply. My friend is still using the car but I hope to get it over here again at the weekend to have a look. I may have disturbed the harness but it may also be coincidental. I tried the converter twice by taking different power feeds then assumed the converter was faulty. The first time the wiring went back ok and none of these problems were evident. Its after the 2nd attempt we're having all these issues. I camt see any way of getting the tailgate to open if it won't unlock. I hope the internal trim comes off from inside, otherwise I cant get it open! It is a real headscratcher. I cant get that link to work unfortunately

Good evening to you all. Newbie to the forum as I am tasked with maintaining a friends alphard that he has recently bought as a fresh import. It is a 57k mint 4wd I need some of your experience to locate a fault with the central locking which seems to have developed a fault since I tried to fit a speedo converter behind the dash. I located 12v, ground and the signal wires, connected the converter and there was no response from the speedo. I took the converter out and reconnected the signal wire again, speedo works OK. I didnt disconnect or alter any other wiring, literally tapped the voltage and routed the speed signal at the clocks multiplug Everything else was working okay, central locking, key remote, sliding doors etc but now the tailgate has decided to not unlock or open. At the same time, the remote keys won't lock or unlock the doors but the side doors lock ok with the internal button - not the tailgate though. Also, the AFS light is flashing and I noticed the buzzer telling me the key is in the ignition is now silent. We have many keys and we've replaced all the batteries. I initially thought it may have just been weak batteries in the fobs but that hasn't made any difference. I'm hoping its something simple like a fuse however all the fuses I've found are okay. I cant work out what is common to these functions and the manual is in Japanese and I cant see how the converter work I did has caused this to all fail. Can anyone shed any light or give me some pointers as to where to start?