Enable rear camera display while driving?

[32kcolors]

Originally Posted by hawkmoon77

Is anyone going to try it?

You're the mod expert around here, so you can try it

The hidden menu is obviously way easier. Too bad they disabled it mid-2007 model year and I haven't upgraded my NAV disc in the Lexus for this reason. Would rather deal with outdated maps than lose the ability to override in motion lockout and other functions.

[rachaelseven]

Originally Posted by 32kcolors

Too bad they disabled it mid-2007 model year and I haven't upgraded my NAV disc in the Lexus for this reason.

So you're saying that an upgraded NAV DVD would disable the service menu? That would indicate the device firmware is reloaded with the DVD, not just map data. If that's the case, someone with the necessary software skills should be able to compare the two versions of the DVD and pretty much reverse engineer the firmware. Once the operating system is understood, one should be able to make it do anything. I've followed along on hacking forums where people used a similar approach to get cameras to do functions that the OEMs didn't want them to do. Unfortunately, I lack the necessary skills to do it myself (or I definitely would), but if what you're saying is true, there might very well be an opening there for a suitable software/firmware expert.

[32kcolors]

Originally Posted by rachaelseven

So you're saying that an upgraded NAV DVD would disable the service menu? That would indicate the device firmware is reloaded with the DVD, not just map data. If that's the case, someone with the necessary software skills should be able to compare the two versions of the DVD and pretty much reverse engineer the firmware. Once the operating system is understood, one should be able to make it do anything. I've followed along on hacking forums where people used a similar approach to get cameras to do functions that the OEMs didn't want them to do. Unfortunately, I lack the necessary skills to do it myself (or I definitely would), but if what you're saying is true, there might very well be an opening there for a suitable software/firmware expert.

Yes, people have done that. Burn a hybrid DVD with the ver 5.1 firmware and the ver. 6.1 firmware/updated map data.

[rachaelseven]

Originally Posted by 32kcolors

Yes, people have done that. Burn a hybrid DVD with the ver 5.1 firmware and the ver. 6.1 firmware/updated map data.

I guess then the question becomes can the firmware be decrypted and unlocked. Hmmm... surprised the software types haven't gotten in there yet.

[MarvHein]

Originally Posted by hawkmoon77

A quick san f he wiring diagram tells me that the wire marked revers that feed into connector L42 behind the NAV (the pink wire in pin 5) runs to the integratino relay. It seems as though that relay may conenct the reverse wire to ground when activated. The relay is controlled by the power management ecu.

So it looks like my theory is probably right. A quick check with a multimeter can confirm.

This also assumes that that reverse signal is all the NAV needs to go into reverse camera mode (I can't verify that without trying it).

If it is the case, the only thing you'd need is a switch wired up the right way.

Is anyone going to try it?

I might try it if I didn't have to remove a bunch of stuff to get to the pink wire at the nav unit. Where is the other end of the wire at the relay you mention?

[rrolff]

Originally Posted by 32kcolors

Yes, people have done that. Burn a hybrid DVD with the ver 5.1 firmware and the ver. 6.1 firmware/updated map data.

Do you know where I can research this??? Our Lexus GX has an older map, but I can't update it because then I lose the screen backdoor.....

[32kcolors]

Originally Posted by rrolff

Do you know where I can research this??? Our Lexus GX has an older map, but I can't update it because then I lose the screen backdoor.....

Go over to Club Lexus forum and someone there will know. I don't have experience with it.

[32kcolors]

Found a way to enable rear camera display while driving.

1. Follow the procedures below to get into service menu:

YouTube - 2010 Toyota Prius Bluetooth microphone volume adjustment

YouTube - 2010 Toyota Prius Bluetooth microphone volume adjustment

2. Press Function Check/Setting
3. Press Camera Setting
4. HOLD DOWN Back Camera Setting for 3 seconds
5. You'll get to the Signal Check menu, ignore this menu and press Next
6. Ignore the Individual Setting menu and press Next
7. Rear camera display should come on at this point (there are several submenus including Roll Angle Adjustment, Vertical and Horizontal Position Adjustment, Bumper and Verify Mode, and you can just repeatedly press Next to navigate through them)
8. Drive away with the rear camera display enabled

[rachaelseven]

Originally Posted by 32kcolors

Found a way to enable rear camera display while driving.

1. Follow the procedures below to get into service menu:
2. Press Function Check/Setting
3. Press Camera Setting
4. HOLD DOWN Back Camera Setting for 3 seconds
5. You'll get to the Signal Check menu, ignore this menu and press Next
6. Rear camera display should come on at this point (there are several submenus including Roll Angle Adjustment, Vertical and Horizontal Position Adjustment, Bumper and Verify Mode, and you can just repeatedly press Next to navigate through them)
7. Drive away with the rear camera display enabled

In that video, and in my car, the Camera Setting option is grayed out when entering the service menu. Is that option enabled on yours? And if so, I wonder what difference allows that to occur?

[cpatch]

Originally Posted by rachaelseven

In that video, and in my car, the Camera Setting option is grayed out when entering the service menu. Is that option enabled on yours? And if so, I wonder what difference allows that to occur?

I can't even get into the service menu, despite duplicating the steps in the video several times in slightly different parts of the corners.