Hard ride / harsh suspension
#1
06-09-2023, 09:42 AM
Hard ride / harsh suspension
Dear forum members,
My name is Yan and I'm from Ukraine. Half a year ago, I became the proud owner of a 2010 Range Rover Sport S/C. However, I've recently encountered a peculiar issue, and I'm hoping for your assistance and advice.
When driving above 50 km/h, the suspension of my car becomes unusually stiff, despite the conditions remaining the same – I'm using the same roads and maintaining the same speed. If I slow down to less than 50 km/h, the suspension regains its usual softness, but this change doesn't happen immediately, it takes about a minute or so.
We've already inspected the entire suspension but found no issues. There are no active error codes or warnings on the dashboard, and checks indicate that the control units do not require updates.
I sincerely hope for your help and advice on this matter. Perhaps someone has encountered a similar issue or can suggest what might be causing this behaviour in the suspension. I thank you in advance for any information and assistance you can provide.
Best regards,
Yan
My name is Yan and I'm from Ukraine. Half a year ago, I became the proud owner of a 2010 Range Rover Sport S/C. However, I've recently encountered a peculiar issue, and I'm hoping for your assistance and advice.
When driving above 50 km/h, the suspension of my car becomes unusually stiff, despite the conditions remaining the same – I'm using the same roads and maintaining the same speed. If I slow down to less than 50 km/h, the suspension regains its usual softness, but this change doesn't happen immediately, it takes about a minute or so.
We've already inspected the entire suspension but found no issues. There are no active error codes or warnings on the dashboard, and checks indicate that the control units do not require updates.
I sincerely hope for your help and advice on this matter. Perhaps someone has encountered a similar issue or can suggest what might be causing this behaviour in the suspension. I thank you in advance for any information and assistance you can provide.
Best regards,
Yan
#2
06-17-2023, 05:52 AM
I've resolved the issue with the hard suspension. The problem was with non-standard tires for this car (255/55 R20), which are significantly larger than the standard tires. The profile height in the BCM block was considerably lower, the car's sensors misinterpreted the incoming information and stiffened the suspension: the car became as hard as a sports car. Initially, I tried to calibrate the accelerometer, but my laptop ran out of battery, and I left with a disconnection error from the module that controls the vehicle's roll (I might be wrong), and a miracle happened: the car stopped being stiff. There were many experiments afterwards, but the following helped:
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
#3
06-21-2023, 02:37 PM
I've resolved the issue with the hard suspension. The problem was with non-standard tires for this car (255/55 R20), which are significantly larger than the standard tires. The profile height in the BCM block was considerably lower, the car's sensors misinterpreted the incoming information and stiffened the suspension: the car became as hard as a sports car. Initially, I tried to calibrate the accelerometer, but my laptop ran out of battery, and I left with a disconnection error from the module that controls the vehicle's roll (I might be wrong), and a miracle happened: the car stopped being stiff. There were many experiments afterwards, but the following helped:
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
#4
08-15-2023, 09:54 PM
I've resolved the issue with the hard suspension. The problem was with non-standard tires for this car (255/55 R20), which are significantly larger than the standard tires. The profile height in the BCM block was considerably lower, the car's sensors misinterpreted the incoming information and stiffened the suspension: the car became as hard as a sports car. Initially, I tried to calibrate the accelerometer, but my laptop ran out of battery, and I left with a disconnection error from the module that controls the vehicle's roll (I might be wrong), and a miracle happened: the car stopped being stiff. There were many experiments afterwards, but the following helped:
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
1. Engineering mode SDD
2. Changing the data about the tire size and their circumference through the SDD engineering menu
For a week now, the car has been comfortable and only brings positive emotions.
Last edited by obiwantoby; 08-17-2023 at 09:25 PM.
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