Americas Transmission Programming and clunking

[Zimm]

It appears to me from driving more than one example, in high range the transmission is programed with gear holding/shifting, and tq converter slip such that for everyday street use the unit behaves in an unrefined and abrupt manner unconducive to smooth driving when stopping or in traffic. This increases with both positive and negative pitch of the nose, perhaps as an effort to control speed on hills, but with an aggressiveness that is excessive for dry pavement use, with the side effect of droning and poor 3-2 downshifts eliciting an unnerving clunk from the transfer case not experienced in other modern automatic SUVs.

Can you update the shift programming to eliminate these issues.

Please Advise.
Thank you.

 

[BA_Greni]

+1

 

[Tazzieman]

It's a known issue for the vehicles driven 85% of the time in the city

 

[grenadierguy]

It appears to me from driving more than one example, in high range the transmission is programed with gear holding/shifting, and tq converter slip such that for everyday street use the unit behaves in an unrefined and abrupt manner unconducive to smooth driving when stopping or in traffic. This increases with both positive and negative pitch of the nose, perhaps as an effort to control speed on hills, but with an aggressiveness that is excessive for dry pavement use, with the side effect of droning and poor 3-2 downshifts eliciting an unnerving clunk from the transfer case not experienced in other modern automatic SUVs.

Can you update the shift programming to eliminate these issues.

Please Advise.
Thank you.

Completely agree! Feels like I drop my transmission or run over a small child.

 

[Dlucky]

It appears to me from driving more than one example, in high range the transmission is programed with gear holding/shifting, and tq converter slip such that for everyday street use the unit behaves in an unrefined and abrupt manner unconducive to smooth driving when stopping or in traffic. This increases with both positive and negative pitch of the nose, perhaps as an effort to control speed on hills, but with an aggressiveness that is excessive for dry pavement use, with the side effect of droning and poor 3-2 downshifts eliciting an unnerving clunk from the transfer case not experienced in other modern automatic SUVs.

Can you update the shift programming to eliminate these issues.

Please Advise.
Thank you.

It appears to me from driving more than one example, in high range the transmission is programed with gear holding/shifting, and tq converter slip such that for everyday street use the unit behaves in an unrefined and abrupt manner unconducive to smooth driving when stopping or in traffic. This increases with both positive and negative pitch of the nose, perhaps as an effort to control speed on hills, but with an aggressiveness that is excessive for dry pavement use, with the side effect of droning and poor 3-2 downshifts eliciting an unnerving clunk from the transfer case not experienced in other modern automatic SUVs.

Can you update the shift programming to eliminate these issues.

Please Advise.
Thank you.

+1

 

[MattA]

It isn’t the transmission as such rather the programming and the electrical side as it’s all computer controlled , in the discovery 4 with the same transmission it’s silky smooth with the only issue from factory being it holds second for to long rather than dropping down to first so it can be a it sluggish from a rolling start which can be fixed with a remap of the ECU
The issue described hear will be able to be fixed once aftermarket companies rewrite some software

 

[Shopkeep]

Weird, I daily drive 98% in the city and my transmission is super silky buttery smooth. It does hold onto gears more aggressively going down steep hills but I would have thought this was desired in this type of 4X4 if it was to be used off the bitumen. These transmissions are meant to be adaptive, maybe yours needs a relearn?
Mine is a diesel and there are different transmission versions used, but I would have thought the basic performance would be similar?

 

[Grenadian]

My car is gasoline and I agree with this opinion.

 

[Tom109]

100% this Ineos needs to address this. Unacceptable.

I spent 3 hours last weekend on sandy tracks and not one harsh 3/2 downshift, yet any drive on the road and 3/2 has the t-case clunking.

 

[Phred]

+1

 

[HereinDaRockies]

100% this Ineos needs to address this. Unacceptable.

I spent 3 hours last weekend on sandy tracks and not one harsh 3/2 downshift, yet any drive on the road and 3/2 has the t-case clunking.

Wait, why does the driving surface make a difference

 

[C-Mack]

Most likely the softer surface absorbs the shunt in the driveline… it’s still there but less noticeable. On dry pavement where the tires have full grip the shunt/shock to the driveline is more pronounced and shows up in the part of the system with the most amount of backlash which would be the transfer case.