GEN 2 19-20 Live Valve suspension question

Geoffmp said:

Would the Live Valve shocks still function with the damper installed? I'm thinking that the Valve on the shock is receiving a signal from the terrain selector and the control arm sensor to open or close the valve. If the damper is installed blocking/interfering the signal to think the Live valve is still there and let the truck continue to function if you had non-live valve shocks would the valve then be stuck open and make it super soft or stick shut and make it super stiff like when the truck is off and not receiving a signal?

Click to expand...

If you run non live valve shocks you have to have the DID dongle bypass. It tricks the system into thinking that it has live valve shocks so the position sensor does nothing at that point. Everything else will work just fine. I'm not positive but I don't believe the terrain selector has any input to the live valve system. If you have live valve shocks, break a wire and use the bypass dongle to get you home I believe it throws all the shocks into full soft.

Fastback89 said:

I have the same, what flash did u do to the bike? I'm worried about losing range with flash.

Click to expand...

Mine has a 2wheeldynoworks flash. If I push it I can make it about 130 miles.... praying I see a gas station lol... My avg comfort zone though is 110-115 miles before I start freaking out about gas depending on where I am.

From RPGs website:

lateralis said:

I think most guys are just ditching live valve at that point. All the wires for the system are a liability off road. You break one and the truck goes into limp mode.

Click to expand...

WOW seriously? I thought it would just set suspension at the stiffest setting if a wire was snagged or cut. You have made me so much happier about my 18 purchase. I plan on running the stock suspension to the ground before rebuilding or upgrading. Cheers!

lateralis said:

Yeah, honestly I think having one of those should be a necessity if you plan to off road a live valve truck. Sucker is pretty expensive though and the shocks still wont work as intended. Worst case scenario though is that the solenoid itself gets toasted. Than you need to rebuild or outright new shock.

I have a '19 myself and would be pretty interested to see some solutions on protecting those stinking wires/sensors though.

Click to expand...

You do not need to rebuild or replace a Live Valve shock for a solenoid failure. The solenoid is serviceable separately from the shock and is relatively inexpensive.

lateralis said:

If you run non live valve shocks you have to have the DID dongle bypass. It tricks the system into thinking that it has live valve shocks so the position sensor does nothing at that point. Everything else will work just fine. I'm not positive but I don't believe the terrain selector has any input to the live valve system. If you have live valve shocks, break a wire and use the bypass dongle to get you home I believe it throws all the shocks into full soft.

Click to expand...

The driving mode selection in the IPC changes the mode of the shocks. The shocks become stiffer in Sport Mode and softer in some Off-Road modes like Baja.

In the event of a failure, the shocks default to full stiffness to protect the truck. In order to change the damping rate, the Vehicle Dynamics Module (VDM) sends a pulse width modulated (PWM) signal to the shock solenoids. The solenoid opens or closes the valve depending on the amount of current supplied by the VDM. The higher the current, the more the valve is opened, resulting in a lower level of damping.

Steebo said:

WOW seriously? I thought it would just set suspension at the stiffest setting if a wire was snagged or cut. You have made me so much happier about my 18 purchase. I plan on running the stock suspension to the ground before rebuilding or upgrading. Cheers!

Click to expand...

The system will default to full stiffness without a signal to the solenoid.

alphatwox said:

From RPGs website:

View attachment 143132

Click to expand...

RPG is providing false information to sell their product.

In the event of a shock solenoid, solenoid circuit, or Vehicle Dynamics Module (VDM) failure, engine performance and power steering will not be affected. These are separate systems. The systems affected will be the Live Valve shocks (obviously) and the user may note that the drive mode selection is unavailable. This is hardly a "limp" mode, as the truck still has full functionality otherwise.

RPG also mentions wheel speed sensors (ABS). Their module will do nothing for you if you damage a wheel speed sensor or circuit.

Thanks for the correction @FordTechOne! So what you're saying is if I pull the plug on one of my shocks it will just send the system in to full stiff and disable drive modes? Does this include shifting in and out of 4A/4H/4L?

I think the limp mode thing comes from the ABS sensor getting damaged to the point it’s sending incorrect data and the truck freaks out.

Keeping it Dirty Off-road on YouTube had a whole thing a bit it with his 2018.


Sent from my iPhone using Tapatalk

lateralis said:

Thanks for the correction @FordTechOne! So what you're saying is if I pull the plug on one of my shocks it will just send the system in to full stiff and disable drive modes? Does this include shifting in and out of 4A/4H/4L?

Click to expand...

Correct. The VDM will set DTCs and disable drive modes. The rest of the truck should remain fully functional, including 4WD modes which are controlled by the Transfer Case Control Module (TCCM).