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-   -   Selec Terrain issues (http://www.jeepgarage.org/f107/selec-terrain-issues-17978.html)

7upstang 01-26-2011 11:27 AM

Selec Terrain issues
 
We finally have some snow and I wanted to try out the Selec-Terrain. Car is running, foot on brake, shift into neutral, knob will go to the right for sand/mud or rock, but not to left to snow. Did I do something wrong?

I already have a couple other minor issues that have come up: Sirius comes in and out, I get a H/W Fail on the radio. I also noticed a little rattle in the headliner above the driver, I have the big sun roof.

Any help for selec-terrain would be great since they are calling for 8" today.

Jim

wjs81866 01-26-2011 11:31 AM

Re: Selec Terrain issues
 
Unless you are trying to get into 4Low you don't need to shift to neutral to change to the selections such as snow. If you want to switch to snow simply turn dial to the left. You might feel a little jerk or slight slip depending on if you are moving or not.

Nbtstatic 01-26-2011 11:36 AM

Re: Selec Terrain issues
 
Selec-terrain is an on the fly system, no need to go into neutral.

For Sirius coming in and out, does the display show "updating channels"? There is a new software version for the 730n nav that fixes this, not sure though if you have the 430n.

ETA: You might also find this useful.
http://www.wk2jeeps.com/drivetrain/selec-terrain_02.jpg

Dunecrawler 01-26-2011 12:26 PM

Re: Selec Terrain issues
 
Quote:

Originally Posted by Nbtstatic (Post 342176)
Selec-terrain is an on the fly system, no need to go into neutral.

For Sirius coming in and out, does the display show "updating channels"? There is a new software version for the 730n nav that fixes this, not sure though if you have the 430n.

ETA: You might also find this useful.
http://www.wk2jeeps.com/drivetrain/selec-terrain_02.jpg

Thanks, was looking for this table

wsw523 01-30-2011 11:33 PM

Re: Selec Terrain issues
 
nbstatic - thanks for the table. what is the difference between standard esp & off-road esp? for the off-road setting, does the system kick in faster than with standard?

do you know what the speed limitations are for each setting? i've read in another forum that snow is limited to 40mph. I would imagine sand/mud would be as well and that rock would be limited to even less.

Nbtstatic 01-31-2011 12:32 AM

Re: Selec Terrain issues
 
I'm not really positive about speed limitations being attached to Selec-terrain modes, but here are the limitations based on QL settings.

Normal (NRH)

The standard ride height and is best for all-around driving conditions. It offers 8.1 inches of clearance and provides the most comfortable balance of ride and handling. The vehicle height will change automatically from Off-Road 1 to Normal when vehicle speed exceeds 50 mph. The vehicle height will change automatically from Aero to Normal when vehicle speed drops below 25 mph, or when vehicle speed is less than 60 mph and the user changes the Selec-Terrain switch from “Sport” to “Automatic”.

- Off-Road 1 (OR1)
Provides 1.3 extra inches (9.4 inches of clearance) for off-roading, but allows a bit more suspension comfort. This position provides a good balance between ground clearance and ride comfort. This position should be the default position for all off-road driving until OR2 is needed. A smoother and more comfortable ride will result. Press the “Up” button once from the NRH position while the vehicle speed is below 48 mph (77 km/h). When in the OR1 position, if the vehicle speed remains between 40 mph (64 km/h) and 50 mph (80 km/h) for greater than 20 seconds or if the vehicle speed exceeds 50 mph (80 km/h), the vehicle will be automatically lowered to NRH.

- Off-Road 2 (OR2)
Provides the maximum ride height of 2.6 extra inches (10.7 inches of ground clearance) for the highest clearance over obstacles. This position also provides the best approach, departure, and breakover angles. To enter OR2, press the “Up” button twice from the NRH position or once from the OR1 position while vehicle speed is below 20 mph (32 km/h). While in OR2, if the vehicle speed exceeds 25 mph (40 km/h) the vehicle height will be automatically lowered to OR1.

- Aero
Lowers the vehicle just over a half inch to maximize aerodynamics and fuel economy at highway speeds. This position also reduces body roll and provides a “sportier” feel. The vehicle will automatically enter Aero Mode when the vehicle speed remains between 62 mph (99 km/h) and 66 mph (106 km/h) for greater than 20 seconds or if the vehicle speed exceeds 66 mph (106 km/h). The vehicle will return to NRH from Aero Mode if the vehicle speed remains between 30 mph (48 km/h) and 35 mph (56 km/h) for greater than 20 seconds or if the vehicle speed falls below 30 mph (48 km/h). The vehicle will enter Aero Mode, regardless of vehicle speed if the Selec-Terrain™ knob is turned to the “SPORT” position. Turning the Selec-Terrain™ knob to the “AUTO” position will return the system to normal operation.

- Park
Lowers the entire vehicle 1.5 inches below normal height to make loading and unloading people or cargo much easier. To enter Park Mode, press the “Down” button once while the vehicle speed is below 25 mph (40 km/h). Once the vehicle speed goes below 15 mph (24 km/h) the vehicle height will begin to lower. If the vehicle speed remains between 15 mph (24 km/h) and 25 mph (40 km/h) for greater than 60 seconds, or the vehicle speed exceeds 25 mph (40 km/h) the Park Mode change will be cancelled. To exit Park Mode, press the “Up” button once while in Park Mode or drive the vehicle over 15 mph (24 km/h).

The system also continually monitors passenger, cargo and trailer tongue weight and adjusts the air suspension automatically, to maintain a level ride.

RYAN ANGEL 07-13-2012 04:03 PM

Re: Selec Terrain issues
 
Quote:

Originally Posted by wjs81866 (Post 342167)
Unless you are trying to get into 4Low you don't need to shift to neutral to change to the selections such as snow. If you want to switch to snow simply turn dial to the left. You might feel a little jerk or slight slip depending on if you are moving or not.


I noticed the jerk when switching from SNOW to AUTO mode when my jeep (2012 GC Altitude) is at a stop. However, I don't feel the jerk when the jeep is in motion. Is this normal?

AAAA 07-14-2012 07:28 AM

Re: Selec Terrain issues
 
Quote:

Originally Posted by RYAN ANGEL (Post 656081)
I noticed the jerk when switching from SNOW to AUTO mode when my jeep (2012 GC Altitude) is at a stop. However, I don't feel the jerk when the jeep is in motion. Is this normal?

I hope you are doing this while on soft ground (i.e. not on asphalt). I have never switched to SNOW unless I was on .... snow.

bilex 10-27-2012 05:41 AM

Re: Selec Terrain issues
 
Quote:

Originally Posted by AAAA (Post 656362)
I hope you are doing this while on soft ground (i.e. not on asphalt). I have never switched to SNOW unless I was on .... snow.

First day of snow, here in Poland. So I thought of reading something about SNOW setting.
I've found your post and a question immediately came to my mind:
why not?
SNOW setting as far as I know improves traction and stability by splitting torque 50/50. Period.
Everything else is as it was in Auto mode. So why changing it only on "soft ground"?

AAAA 10-27-2012 11:59 AM

Re: Selec Terrain issues
 
You were OK as you were on snow. If on asphalt you run the risk of building up excessive torque between the axles... more so on rock setting though. This can cause mechanical wear if done frequently, on tight turns and for long periods of time. Snow setting probably provides some slippage between front and rear anyway. Don't worry.

windsurfnut 11-01-2012 10:32 AM

Re: Selec Terrain issues
 
You'll notice the throttle response difference in snow vs auto and especially sport.
In snow the throttle is not as responsive and build slower.
try accelerating normally in snow mode and switch to sport, you can easily feel it change.

JMD JEEP 12-23-2012 12:43 AM

Re: Selec Terrain issues
 
I've read in the past of a lot more relevant differences. For one, some transmissions will start in 2nd not 1st wile in "Snow" setting. "Less likely to spin tires from a start". This setting is also supposed to make your steering more sluggish and less responsive. Less likely to over steer and spin out wile it's slippery. I believe all this drops out over 40mph in the Snow setting though. At least I read this all somewhere.


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