tsagaan

guys,
i got several questions below.

1.on my gl350 2010, i never see D7 on manual mode. is this normal? i see D1-D6 only.

2.on manual mode, it does not really shift as soon as you change the gear. if I want to shift early around 1,5 it does not change but change only after 2k rpm as it is automatic mode. so i understood that manual mode is only to stop gears shifting up. in other words, setting limits of higher gears. correct?

3.also on auto mode, D3-D4 is shifting at around 2,5rpm which is higher than other gears at 2k rpm. is it same for you too? should i reset transmission adaptation?

4.when i parked on downhill, such as parking entry, i hear very strong hitting sound on changing gear from P to D. normal?

5.when I parked on downhill, releasing brake while on P position, car moves slightly. like there is a gap between brake point and P position. normal? (sorry, this might be not clear. dont know how else to explain this.)

Thanks.

stickygreen

1. Yes, normal

2. I haven't driven an automatic that will manually upshift early if your throttle position dictates a later upshift. Only exception would be dual clutch transmissions, which really aren't automatics

3. Not sure if normal, but makes sense since there is a bigger gap between 3rd & 4th in gear ratios (IIRC), which would call for a higher rpm upshift under constant throttle

4. When parked on a hill, USE YOUR PARKING BRAKE! That sound is your transmission shifting off the parking pawl, which is compressed due to the weight of the car resting fully on it. This is also what you feel in Q#5, the small movement is your car bouncing off the parking pawl. Personally, I use the e-brake whenever in park.

5. See # 4

tsagaan

thanks.

what do you mean e-brake?
when i use manual brake on D position, it does not really stop the car unless i really really push. is that mean my handbrake is not configured correctly?
because of this i do not use manual brake on downhill or in D position. always shift to P hence having #4 and #5.

stickygreen

Use both, and push down hard on the ebrake pedal. Engage parking brake before removing your foot from the normal brake pedal to avoid bouncing off the parking pawl

iankayem

I doubt that is bouncing on the parking pawl.
Rather it is backlash along the driveline, particularly in the diff.
Park holds the car from the transmission only.
The brake holds it at the wheels.
As you release the footbrake, the vehicle moves to take up the backlash along the driveline, from the wheels to the transmisson.
This is perfectly normal and exists on all cars with a park position, or a manual where you kill the motor and put it in gear.
It will do no harm, but may be disconcerting to some passengers.

As sticky green suggested, if you put on the parking brake, it will not happen.

Also please note:
The transmission paddles do not select a gear. They only select a range of gears that the car will drive in.
EG, D1 allows only 1st, D2 allows 1st or 2nd, D3 allows 1st, 2nd or 3rd.
D6 allows all gears except 7th, and there is no need for D7, as beyond D6 it will allow any of the 7 speeds which means full automatic.

UDWANIT2

sticky Green is on point.....

N_Jay

Not to get on my soap-box, but just when did people stop using the parking brake as taught in every single drivers-ed class and written in every single owners manual?

alx

the manual specifically says to not load the transmission by holding the truck in park on an incline. use the emergency brake.

the park pawl is a real part and expensive repairs were caused by using it alone to hold the truck on an incline. search the forum.

the proper procedure is.

1. hold the brake pedal
2. put in park.
3. put emergency brake on
4. release slowly brake pedal

on take off -

1. hold the brake pedal
2. release emergency brake
3. put truck in gear
4. slowly release the brake pedal