/
Using Max Cooling On-The-Fly

Using Max Cooling On-The-Fly

Details about Max Cooling On-The-Fly can be found in the main article: Max Cooling On-The-Fly

If you have Custom code v7.0.x or older, see instructions here: [Outdated] Configure Max Cooling On-The-Fly Before Custom Code v7.1

Vehicle's ignition has to be on.

Enable or Disable Max Cooling

  1. Enter the Custom Code Menu (CCM). Let go once the Check Engine Light (CEL) starts blinking slowly.

    Custom Code Menu details can be found here: Custom Code Menu (CCM)

 

(UniRocker) Short up on rocker
(UniRocker) Short down on rocker

OR

(RockerCombo) RES Button located with Cruise Control Buttons

OR

(RockerCombo) BC Button located behind Steering Wheel

 

  1. Move rocker up and down to navigate through the Custom Code Menu until you reach 3000 RPM (the Max Cooling submenu).

UniRocker uses far up/down on the rocker to navigate the menu. RockerCombo uses short up/down.

Rocker located beside RES Button
Tachometer at 3K RPM
  1. Using your button configuration, press “enter” to continue into the Max Cooling submenu.

UniRocker: hold short up/down on the rocker to enter a submenu. RockerCombo: hold BC or RES button.

 

  1. Once entered, the Check Engine Light (CEL) will blink 3 times showing you have entered into the Max Cooling submenu.

Check Engine Light blinking 3X

 

  1. Select the Max Cooling status you want by using short or far up/down on the rocker to increase/decrease the RPM shown on the tachometer.

UniRocker: far up/down on the rocker to adjust values. RockerCombo: uses short up/down.

 

0 RPM - Disabled

1000 RPM - Enabled

Down on rocker

OR

Up on rocker
  1. Using your button configuration, press “enter” to accept the Max Cooling status.

UniRocker: hold short up/down on the rocker to accept. RockerCombo: hold BC or RES button.

 

RES Button located with Cruise Control Buttons

OR

BC Button located behind Steering Wheel

Sub Menu:

Disabled

ECU will use “Regular Cooling” parameters set in-app.

Tachometer at 0 RPM

 

 

Enabled

Max Cooling will be enabled and the ECU will use parameters set in-app.

Tachometer at 1k RPM

 

 

 

Related content

MG Flasher @ 2025