Brake problem.

welcome!

it's a minor issue with a delay between traction control and braking. the software update helps a bit, but just keep a firm foot on the pedal, and you'll get used to it.

 

The way to resolve the issue is buy a different car. This is a normal with Prius.

 

I hope that this behavior, since it is normal for a Prius, was not the reason you went to the trouble to replace the actuator!

You can check the firmware version with Techstream. In the US, a car that has 15 inch wheels and has been updated will have version F152647106 or newer, and a car that has 17 inch wheels and has been updated will have version F152647126 or newer.

Those version numbers come from the US service campaign document T-CP-A0B-0001-D, available to US customers on techinfo.toyota.com, but I am not sure where you would find the corresponding information for the JDM. @Elektroingenieur might know.

As far as I know, there was nothing earth-shaking about the update; all Prii have the regen-to-ABS split-second feeling of brake loss, but that update was released after there were especially many inquiries about it for the 2010 model, so probably the change managed to make it less startling. In the US, it was handled as a recall, not just an if-requested service, so is probably worth having, in case it did change anything more in the firmware than we know about.

I just don't know what the corresponding information for JDM would be.

-Chap

 

we go to the dealer here, no idea how you would do it in sri lanka, sorry.

 

I can confirm that the update in 2010 was a global recall: see Toyota’s announcement and the MLIT notice (PDF) and database entry (all in Japanese), but I don’t know how anyone outside the Toyota dealer network would get the remedy instructions or updated software for vehicles first sold in Japan. Even the FAINES database, the usual source of repair information for the aftermarket, seems to include only recall notices, not work instructions.

You’re in a better position than we are, of course, to know what the Toyota dealer in your country will or won’t do, but if you haven’t already asked them specifically about safety recalls, you might check again. In Singapore, for example, the Toyota distributor isn’t responsible for the warranty on cars they did not sell, but they will do at least some recall repairs on them, for which they are reimbursed by Toyota in Japan.

You could search Toyota’s recall database (in Japanese) by frame number to see if the update was done before the car left Japan, though I realize that the ABS actuator was replaced later. If the recall is listed as incomplete, that might be enough to get Toyota Lanka to help, especially since they’re a Toyota Tsusho subsidiary.

 

How do you enter the Vin number there does not appear to be enough spaces on the 2 entry boxes ?

 

You don’t. Toyota vehicles sold in Japan are identified by model code and frame (chassis) number, not by a seventeen-digit VIN as used in other countries. The first box is for the model code (ZVW30, for a third-generation Prius car) and the second box is for the frame number, typically seven digits.