Hi,
Apologies this is going to be a bit long winded, but I’ve been trying to fix my father in laws 2006 Alphard Hybrid for a while now, with no luck.
So, I thought I’d post a message here to see if anyone can help or advise.
Prior to the problems starting, we had been using the vehicle ok during the day, although it had needed to jump start it first thing that morning, but it then seemed ok for the rest of the day. However, as we approached a roundabout that evening, the power steering stopped working, so we pulled over. The vehicle then refused to drive again and hasn’t driven since.
I contacted a few Hybrid specialists that advised it was a HV battery issue and to get it reconditioned. Which we did. During the battery recon, the large 125amp next to the service plug fuse was found to be blown. That was replaced but the car still won’t drive, and the engine doesn’t start.
I have also since found that there was some corrosion in the block connector to the HV battery ECU. So, I’ve sourced another ECU and rectified that issue, but still no joy.
When I try so start the car, the dash lights up and the center console screen (Satnav, HV battery level etc.) comes on. The HV battery level shows 3 bars, so there seems to be plenty of charge in it. And there is a fairly loud click from the relays (HV battery) under the passenger seat.
When I turn the key, I get another couple of loud clicks from the HV relays, the “READY” light flashes “white” 3 times, and the center console screen cuts out. When I release the key the center console screen starts back up again. But the engine doesn’t even try to turn over.
I’ve not got a copy of Techstream, yet, but I am on the lookout for one. I’ve tried the Motordata software with the Alphard Hybrid plugin. Initially with that software I was getting some errors, but since fixing the corroded pins on the HV battery ECU, I’m no longer getting those errors.
As the car is not mine, I’m not familiar with the start-up sequence of the Alphard.
Is the “READY” light supposed to be on when the ignition is turned on?
Is the center console screen cutting out normal? Or could this indicate a voltage drop somewhere.
I know these vehicles are very fussy when it comes to 12v aux battery voltages.
Here’s hoping someone out there can help.
Any advice will be massively appreciated.
