Originally Posted by Mudman1
Side note...when it is below 40 F or colder, and you are at a stop sign / light, push your shift lever over into manual mode. Are you starting out in 2nd gear, or 1st gear?
its not based on temperature, when the non-trailhawk 9-speeds are in snow mode is when they set it to prefer to start in 2nd.
The definition of 2nd gear in casual conversation, as WisHawk pointed out, depends on your trim as the trailhawks always start in what is "technically" the second gear of the transmission and if you are wondering "does that mean the trailhawks will start in the transmission's 3rd gear in snow mode?" the answer is almost certainly no
. That would put them pulling away from a stop at an 8:1 ratio and it is extremely unlikely the engineers would do that.
The second-gear start of a non-trailhawk 9-speed is almost 11:1, the first gear start of a trailhawk (as we said, technically 2nd gear) is 12:1
So if 11 or 12ish to one is the most desirable snow&ice starting ratio as calculated by Jeep's engineers then the trailhawk always starts in an optimal ratio for slippery conditions.
What I want to know is how firm is the rule. That is, did Jeep completely lock out use of first gear in the trailhawks unless in rock mode or can it dig down to first in a normal driving mode if at a stop and the pedal is mashed to the floor. aka, does it have a leg up on the other models from a hole-shot or is it crippled from a standing start?
Also, is first gear accessible outside of rock mode on a trailhawk when using the auto-stick feature? If anyone tests this, you will need to be careful because they might label second gear as "1st" and present it to you that way on the screen. You'd have to start from a stop on a highway and count your shifts and see if you have a 9th gear or if it only goes up to 8.