IPA Not Working Properly After Repair

Dear all Priusites,

The title of the thread says it all... Well, just a little history of what'd happened to my Prius 1 month ago; I've got rear-ended and was shunted forward and hit the car in front of me, so the damages were both bumpers at back (more severe) and front (slight damage to the front number plate). Got it back last Thursday and it all looked fine and well, until today where I was being asked to show off the IPA at work, and it is not working properly, in fact it is not working at all.

I was trying to do a back-in park, stop the car in front of the first car, press the IPA button twice, then move the car slowly forward for scanning. As the Prius moved toward the second car after the empty car space, it displays a "not enough space..." message. I tried it again, and then with double car spaces sandwiched between two cars, not work still.

I also tried to parallel park, no error message, but when I put it in reverse, no blue box showing where the car will go. It is not automatically scanning and recognising a car space. I had never had so much troubles with the IPA at all before the repair.

The following repairs to the car:
- Replaced the whole rear bumper
- Replaced all four rear parking sensors
- Fixed the damage on the front number plate
- Repainted both front and rear bumpers
- V12 battery has either been disconnected or discharged to a state where the clock and some NAV and radio memories were resetted or wiped

Anything I can do to recalibrate the IPA since it has sufferred a total discharge or some sort?

Should I go back to the dealer or the repairer since this IPA stuff is a delicate component?

 

Just checked the NAV manual, there is a need to reinitialise the system if:
- 12V battery is disconnected and subsequently reconnected, and
- The initialisation screen is displayed when gear is engaged in Reverse position

However, I do not see this initialisation screen... what do I do?

I have been reading the ability to get into maintenance mode, but I cannot get it to work; Press DISP button, then touch the top left corner just inside the box and below the "Display" word once, then touch the bottom left corner just inside the box, do this 2 more times and should enter the maintenance mode...

Running out of idea.......

 

Yep, same issue for both sides. I will talk to my insurance company tomorrow and let you all know how I go.

 

Well, just brought the car back to the workshop. They opened the bottom cover to check the sonar sensor connection, and it was OK. Then I asked them about the V12 battery went flat. They reluctantly knowledged and said they had to disconnect it and recharge it with some recharging kit, also given the fact that they have disconnected the sensors from the cable, the car thinks the sensors are new and need recalibration.

I have since rang Toyota and told them what happened in the last 5 weeks, they said it would need to be reprogrammed. 1st dealer said would take couple hours of work, would cost me 204 bucks, whereas the 2nd dealer which I bought my car from said they do not know how much it would cost me because they have to diagnose the problem first. According to the 2nd dealer, the PCS would also need reprogramming also. Think I would just use the 1st dealer as he sounded he knows what he is talking about. I will just forward the invoice to the repairers.

That's concerning if the car needs reprogramming every time the car battery has gone flat!? It might turn out to be very expensive repair/battery replacement...

 

Also, I still cannot enter the maintenance mode as per instruction given in other threads here. I think the Oz Prius has this feature disabled or not even available. Why is Toyota Australia dumbing down the NAV system? The oversea (US, UK, etc) version is so much better!

 

Mate, that's still better than what we have here... in addition to the things you listed out, there are no voice activated NAV, NAV feature is really 10-year behind the likes of Tomtom or Garmin, phone voice recognition only works with names and you have to press DIAL button to dial, no maintenance/diagnostic mode, therefore changing the volume of bluetooth system requiring a 200 bucks visit to the dealership... not happy chappy.

 

I just done what you suggested; disconnect the +ve terminal for 15 mins, reconnect and start car twice (first time after some initialisation), battery charge was OK (12.5 off and 14.5 on). Driven it around and tested out the IPA again; did not work. I suspect PCS does not work either, it's hard to test. But DRCC is OK.

There are still no initialisation help screen when I use IPA first time after battery reconnection as per Toyota instruction. I am destined to pay a visit to the dealership. I would ask for a full report of what they have found and how to avoid the same situation again (i.e. don't have to fork out a 200 bucks visit each time the battery goes flat).

I read somewhere in this forum mentioning the car should automatically shuts off some features to save battery after 3 days undriven... is that true? Do I have to press something in order for it to go into power saving mode? I will be on a 2-week holiday end of December, this debacle starts to make me a little nervous.

 

Well, just took my car for a checkup... not surprisingly, they couldn't find anything wrong with it. But then they found the system needs recalibration after the rear bumper has been moved/replaced. So we went through the manual (found out how to enter into Maintenance Mode, by holding down Info-Tel button and turn on and off the headlights 3 times, yay!!), recalibrated the rear camera. But the IPA is still not working, showing the same previous error message (parking space not large enough for park assist to work...) Tried with different parking space with wider parking spots, still no good.

They now trying to find what exactly the repairers have done and will have to re-book my car in for a full day to do full recalibration... what a hassle!

Well, I guess I would try something out tonight with that newfound Maintenance Mode! That manual looks useful and unsure where we can get our hands on?!