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  #13  
Old 11-08-2014, 12:00 PM
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Re: Towing, what drive mode?

Mine makes the same noise. It is from the surge brakes on the boat trailer. After some grease it quiets down.

I never hear it while towing with my truck, heard it some while towing with the Expedition (traded that in for the jeep), and is loud in the Jeep.

I don't have any clunks or noise from the suspension

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Old 11-08-2014, 01:29 PM
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Re: Towing, what drive mode?

[QUOTE=scottg918514;1111601]In the warmer months, I'll be towing a boat, about 5000#.

The question, esp. with a diesel, is should I tow in Normal drive mode or sport. And if Sport, should I manual shift?

I'm guessing with a diesel, u want to keep the revs low.

Also, even after reading manual, sport mode is a little unclear to me. If in manual shift mode, does it downshift automatically if u slow down or stop?

We have the 5 speed box and I regularly tow caravans up to 3500kg. Best fuel economy and easy driving is in S4. It seems that 1:1 gearbox ratio gear is always best.
We have many clients with Landcruisers and they report the same results.

Pete.
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Old 11-08-2014, 04:00 PM
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Re: Towing, what drive mode?

Based on reading the forums (only) I believe that you should drive in Auto, but put it in Sport mode once you hit the highway to prevent eco-lowering at speed, and to keep the tranny a gear lower than it wants to go in regular mode. This keeps the engine speed in its sweet spot - plenty of power, keeps it out of the eco range which ends up lugging the engine (which leads to overheating), and keeps the engine and tranny coolants flowing quickly enough to properly shed heat through all the different radiators. Use the paddles if necessary if Sport mode doesn't do what you need.
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Old 11-09-2014, 01:09 AM
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Re: Towing, what drive mode?

Quote:
Originally Posted by Peter.T View Post
Also, even after reading manual, sport mode is a little unclear to me. If in manual shift mode, does it downshift automatically if u slow down or stop?

We have the 5 speed box and I regularly tow caravans up to 3500kg. Best fuel economy and easy driving is in S4. It seems that 1:1 gearbox ratio gear is always best.
We have many clients with Landcruisers and they report the same results.

Pete.
Just leave it in Sport mode (Auto). If you encounter long hills, tap the left paddle to downshift once if it's lugging. It will stay in that gear until you slow down significantly. It will only shift by itself in manual mode at the extremes...near idle and near redline. Once in manual, you must manage the gear selection with the paddles. Long press the right paddle to return to auto.
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