RX350, AWD

80

Asked by bkjen80 Jan 31, 2016 at 09:33 PM about the 2015 Lexus RX 350 AWD

Question type: General

My manual says that pressing LOCK sends torque to all
wheels and helps to get out of snow, retc. After 25mph or
pressing the brake pedal, the transmission switches back
to AWD but mostly forward drive.

Is RX350 on the road a FWD and engages rear for traction
only?

I'd like to understand details of how Lexus models
transmit powers to wheels.

Thanks

5 Answers

80

Thank you. However, I don't think that's entirely accurate. Computer does not send the power to all wheels when there is even traction. It actually switches the car to front WD. That's what I was wondering about. Are they saving fuel or something?

8 people found this helpful.
65

I think the power stops at the rear differential. Only engaging the clutch pads electronically, when it needs to. That leaves you in full time FWD, until it senses a slipping problem, or turning the vehicle. The shaft is spinning all the way back at the rear, but is not spinning the wheels full time until needed.

2 people found this helpful.
65

@Jason. Yes from all I can see about this you are right. It is people chiming in on what they think they know about the systems in SUV's today use that mess up peoples minds. There are many different types of all wheel drive systems.

4 people found this helpful.
30

Basically, FWD is for fuel economy. On paved road with sufficient traction, FWD would be enough. While acceleration, or curving, slippery conditions, AWD will start to work for better traction.

3 people found this helpful.
40

Can someone tell me when I should depress the controls that are located on my center console.I have a Lexus RX 350. Don't tell me that the computer handles everything because they would not be there if not occasionally needed. Lexus could of saved the money otherwise.

4 people found this helpful.

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