Retrofit Facelift Model (2015+) Head Unit to Pre-Facelift Model (2012 - 2014)

Kool

 

Looks good, great job!!!

 

Nice job!

I also own a v (plus+) in the Netherlands with a JBL headunit with DAB+ reception. I was wondering if you maintained all the functionality after the retrofit.

Posted via the PriusChat mobile app.

 

Did you have as the original HU a JBL version? I had no luck finding a 2015 HI for the v. Am I correct assuming that only the HU from a v will fit? What exact model number/name should I search for?
Thanks in advance.

Posted via the PriusChat mobile app.

 

Hello Kepik,

I followed your tutorial and did the upgrade. However, upon completion, it seems I have lost the USB connection. The USB port (next to the AUX port) no longer recognize any USB. Did you encounter the same thing and if so, how did you fix it?

 

I have a 2013 Prius V (two) and I've been wanting to do this myself but I had no clue where to begin. Thank you for sharing this, this will be a great help when I decide to switch out and upgrade my head unit.

 

Kepik,
I see you did this with full reversibility by using the adapter cables but if you had been able to clip the connectors and wires off of the harness of the 2015 car for the camera, the XM and GPS antenna, would you have been able to splice these into your wiring harness?

Also, you noted that you had the XM and GPS backwards, Is the labeling correct in your writeup (post #1)?

 

I tray few days a go but seams to not match with A/C panel.How you solve this problem? You change A/C panel also?

 

He said he replaced the AC panel with the one from the newer car.

 

I recently upgraded our 2012 Prius v head unit to a 2016 based on this thread. I wanted to thank the OP for the information and add a couple of details or changes that I made.

Key differences:

• Skipped the purchased camera adapter by de-pinning the wires and inserting them into a plug that I got with the new unit
• Found less expensive GPS / Satellite Radio antenna adapter cables
  
• Bought the new AC controls for esthetics but swapped the controller boards as there were incompatibilities.
• Built and installed a microcontroller based Nav Lockout Bypass. The Nav Bypass lockout was based on this post by b11101100 and my comments on the bypass have been added to that thread. Speed sensor defeat - a modified approach | PriusChat

When buying the new head unit :

1. make sure the small wiring harness that interconnects the top unit to the bottom unit is included. The original and upgrade are very different and I had to turn down a lesser expensive unit at a local wrecker due to this deficiency.
   
2. instead of unplugging the connectors, have the wrecker CUT THE OTHER CABLES and supply them with the unit. This gives you the proper plug for the backup camera.
3. ask if the SD card is included. If they don't understand your question, chances are they don't know enough to take it out so it will probably still be there but there is no guarantee.

To access and remove entertainment unit see the following link:
First Navigation Speed Lock Override (from the PC shop) in a Prius v: SUCCESS! | PriusChat

Practice de-pinning the sockets on the main plug (L38) that came with the new unit. You won't use this plug so no worries if you screw something up.

1. using a small screw driver pry out the plastic retention bar on the bottom of the plug about 1mm
2. on the socket you want to remove, push the wire in to get the socket to the front of the plug
   
3. on the front of the plug, insert a small flat screwdriver into the square opening above the small hole for the socket. Angle the tip down toward the socket as you are inserting it.
4. Then reverse the angle to pry the plastic catch away from the socket and then pull on the wire to remove the socket.

Take photos and note the wire locations on the camera plugs (both new and old). Depin all wires from the new backup camera plug. Then de-pin the harness wires from the original camera plug swap them into the new locations in the new camera plug. There may be a couple of extra wires in the new plug which get ignored.

My GPS and Satellite Radio connectors came from Discount Car Stereo and were 20 USD each plus shipping. The connector does not latch into the head unit in the same way as the factory connectors but they are very snug and I don't think they will come off. These cost quite a bit less than the Toyota equivalent: 86808-02080. I bought both GPS and Sat Radio for the price of one Toyota version.

https://www.discountcarstereo.com/xmm-toy.html
Part Number XMM-TOY Cable Length: 6 inch, SMB Terminal: Straight

Pinout of Camera Connectors if case you get snarled up
Note that pinouts will be mirrored depending on whether you are looking at the back or front or at the plug or the jack. There is a little dot that marks pin 1 or you can use the existing wire colours to get oriented.
2014 and older 2015 and newer
Camera + L34-7 (W) L172-11 (W)
Camera V+ L34-8 (R) L172-12 (R)
Camera V- L34-16 (B) L172-24 (B)
Cam Ground L34-15 (shld) L172-23 (shld)
MSCL (meter assy) L172-3 (B) -not connected
MSCH (meter assy) L172-4 (W) -not connected

Once I had everything back together, I found the AC controls did not work properly. After dismantling and swapping the controller boards, everything was back to normal. You might chose to do this proactively as it was a bit of a hassle getting everything apart again to make the swap.

Photos to come.

 

Here are the original and updated camera connectors

L34 Connector by MrZap posted Jan 31, 2021 at 11:24 PM

L172 Connector by MrZap posted Jan 31, 2021 at 11:24 PM

Pry up this retention bar about 1mm. By the way this is not the camera connector. I'm practicing on the main connector I got with the new unit which does not get used.

IMG_20201213_222051 by MrZap posted Jan 31, 2021 at 11:24 PM

then remove the socket by releasing the clip from the front.

IMG_20201213_222255 by MrZap posted Jan 31, 2021 at 11:24 PM

Here are the GPS and Sat Radio connectors

IMG_20201213_152629 by MrZap posted Jan 31, 2021 at 11:24 PM

IMG_20201216_004605 by MrZap posted Jan 31, 2021 at 11:24 PM

To remove the AC control, you will have to pull down the right hand side of the plastic panel below the control pretty hard. The 3 prongs coming up have to bepulled pretty far down to clear the AC control. Have a good look as there are quite a few locking plastic points that hold this area together. I can't remember for sure but maybe a couple of screws too?

IMG_20201216_003537 by MrZap posted Jan 31, 2021 at 11:36 PM

Swapping the boards in the AC control

IMG_20201217_193609 by MrZap posted Jan 31, 2021 at 11:24 PM

Camera connector from the original (sorry, don't have a photo of the new connector)

IMG_20201215_201947 by MrZap posted Jan 31, 2021 at 11:24 PM

 

Thanks for this great Wright up.
Few years ago I had a Prius III where I replaced the HU for a deluxe business one so I’m not new to this.

looking to upgrade the same way as you I jumpy on eBay and started my search.

here starts my question.

on eBay I find the 2016 HU for €190 ish which seems to be single din fitting.

or a €500,- 2015 model which looks like 2din


I’m lost here and hope anybody can help me.