This button is for winter mode. The transmission will start in 3rd gear thus reducing wheel spin when starting from a stop in slippery conditions.
The shift button enabled you to capitalize the letter W in your question.
The W button on a Volvo V70 XC activates the "Winter" driving mode. When engaged, it modifies the transmission's shift points to start in a higher gear, which helps reduce wheel spin on slippery surfaces like snow or ice. This feature enhances traction and control in challenging driving conditions.
So that you don't shift the gear selector by accident
To replace the shift lock button on a 2000 Volvo S40, start by removing the center console panel surrounding the gear shifter. This typically involves unscrewing screws and gently prying the panel away. Once exposed, disconnect the wiring harness from the old shift lock button and remove it from the assembly. Install the new button by reversing the process, ensuring a secure fit before reassembling the center console.
The transmission has three selectable shift programs: E, S and W. E is for Economy mode and should be used most of the time. S is the Sport mode and raises the shift RPMs and lowers the throttle position for kickdown. It's more aggressive. W is for winter mode and it should only be used when driving in deep snow.
The W button will be on the center consul near the gear selector, it is used for wet or winter weather as it changes the shift patterns for smoother starts and shifts for increased traction. (note): W button is on a toggle switch with an S so in fact it is a W/S button.
ctrl+shift+windows menu button+c then type in MaxMotives
It's the overdrive engage button, which is like a 5th gear. It only engages when the gear lever is in 4th gear and it can be operated without depressing the clutch.
Press the shift lock override button next to the shifter. Make sure you push it as far down as you can.
Because to press a button to shift a button is like pressing shift to press hard.
press the shift button
Hold down the shift button and |, which is the button next to shift.