"I'm forwarding this info to my local dealer that has my vehicle. Finally, a place that works the problem rather than looking up service bulletins and kicking the tires"


Thats the one!

At the end of the day you don't want the world - just a car that works as it should!

The other small problems you can live with but that noise was driving me nuts

DOC

Please can you find out from Hillendale precisely what, in their opinion, is wrong with the Drop Links they took off, and in also what caused them, and others they have replaced in the past, to fail? Also do the replacement parts have exactly the same part number and are they any different to the original ones? Presumably they submit one of those Electronic Quality Reports every time to LR?

This thread is WAY too long to review at almost midnight (local time...), so I am sorry if these two DR related TSB's have been posted here already, but here they are (issued in the past couple of weeks by Land Rover North America.) Hopefully they help. Well, TSB # 1 in particular doesn't sound too encouraging, but you never know.

TSB# LS204-011

Quote:

Dynamic Response / Ride and Handling Optimization System Noise
AFFECTED VEHICLE RANGE:
Range Rover Sport (LS) All vehicles equipped with Dynamic Response system
CONDITION SUMMARY:
'THUD' FELT OR 'PULSE'/'CLICKING' NOISE HEARD FROM UNDER THE VEHICLE
Situation: A customer may report a concern of an under-car 'thud' from the front or rear suspension, or an under-car 'pulse'/'clicking' noise from the dynamic response valve block or hydraulic tubing. In some cases, the noise may be described as similar to 'water hammer', the noise experienced in a domestic water system when a faucet is turned off quickly. NOTE: Changing any of the dynamic response system components will not eliminate the noise. Visual inspection for problems and torque checks must be completed. The described noise is a characteristic of the dynamic response system and is generated when there is a sudden change in oil flow in the hydraulic circuit. This is a result of a direction control valve switching in response to driving inputs. The change in flow will be accompanied by a pressure pulse, which will be transmitted through the hydraulic and mechanical components associated with the system. The duration and amplitude of the pulse make it audible. There are components in the Dynamic Response and associated systems that can influence the level of the noise.

Action: Should a customer express concern regarding the above, refer to the Repair Procedure detailed in this bulletin to check the associated systems.

REPAIR PROCEDURE
CHECKING FOR PROBLEMS CAUSING DYNAMIC RESPONSE SYSTEM NOISE
NOTE: The noise will not be eliminated by replacing Dynamic Response system components. The visual inspection and torque checks detailed below must be completed.
NOTE: It may not be possible to achieve the same noise level on all vehicles. The amplitude of the noise will vary from vehicle to vehicle due to natural variability, ambient and system temperature, component tolerances and dynamic response system hydraulic characteristics.
NOTE: Following inspections below, if no problems are found, it is likely that there is no fault with the system and the noise generated is simply the characteristic of the system. The customer may be informed of the noise characteristics generated by a hydraulic system pressure pulse.
1. Ensure that all Dynamic Response system connections are secure and problem free.
2. Check other vehicle components for any of the following conditions that could exaggerate the noise:
• Steering linkage integrity and securing torque.
• Stabilizer bar linkage integrity and securing torque.
• Stabilizer bar linkage damage or contact to other components.
• Stabilizer bar bushing and bushing clamp integrity and securing torque.
3. Check the Dynamic Response system components for any of the following conditions:
• Pipe work damage or potential contact with the body or chassis.
• Pipe work mounting clamp integrity and isolation.
• Hydraulic valve block damage or potential contact with the chassis.

Quote:

Dynamic Response / Ride and Handling Optimization System Shudder
AFFECTED VEHICLE RANGE:
Range Rover Sport (LS) All vehicles equipped with Dynamic Response system
CONDITION SUMMARY:
'SHUDDER' FELT OR RAPID 'PULSING' NOISE HEARD FROM UNDER THE VEHICLE
Situation: A customer may report a concern of an under-car 'shudder' from the front or rear suspension, or an under-car rapid 'pulsing' noise heard from the dynamic response valve block or hydraulic tubing. The shudder may continue as long as the driving conditions that created the shudder remain constant, or the shudder may subside, typically in less than five seconds.
Certain driving situations that are most commonly known to cause the concern are as follows:
• From single wheel inputs as follows:
- When speed bumps are traversed at an angle
- Over small step changes in a road surface, such as driveway entrances, broken road surfaces etc.
• From specific road design and vehicle driving styles as follows:
- When the vehicle is cornering at a speed between 6 mph (10 kph) to 19 mph (30 kph)
- Where the road has a significant camber
- When the steering wheel angle is greater than +/-10 degrees
- When the steering wheel angle is held constant for approximately 2 seconds during the turn where the road surface is not perfectly smooth.
The Dynamic Response system control software performs an inaccurate estimation of the road surface conditions, resulting in overcompensation for what it perceives as very small changes in vehicle direction. This overcompensation causes fluctuations in the control pressure delivered to the stabilizer bar actuators producing the shudder.
Action: Should a customer report a concern regarding the above, refer to the Repair Procedure detailed in this bulletin to update the Dynamic Response system control module software.
PARTS:
No parts are required for this bulletin. Information purposes only.
TOOLS:
IDS DVD 103 with Patch File 1 or later software installed

I have complete pdf's of both, should you wish to get a copy please PM me. 

I have evaluated another RRS 07 HSE for a couple of days. I noticed a slight noise from the suspension on a couple of occasions only which was similar to the noise I get on my vehicle. However the noise from mine is virtually continuous on certain roads and at a much greater level.

I would suspect my problem is connected with the DR system but is in my view at the unacceptable level.

My dealer has put in an EPQR and has promised he will follow the issue through to get some form of resolution which is encouraging.

Keep you posted.

Thanks for posting the above infromation Umbertob - very useful.

Regarding the above information and Technical Bulletins LS204-011 and LS204-012 issued within the last fortnight.

At last Land Rover seem to be taking notice of the feedback (I wonder if all our postings or VOR had any contribution) regarding this problem and instructing their dealers to check the vehicle out properly for other causes of the knocking, rather than just jumping to the conclusion that the noise and refering to the original TB which finished by stating "Teh knocking noise is a characteristic of the Dynamic Respose system and therefore not a fault".

Let's hope these two TB's have been issued world wide and not just the USA.

They are also useful in that they appear to give detailed (and hence restrict the circumstances where the noise can be attributed to the DR) information of when the DR system may make the noise.

So if anyone experiences knocking noises which are not covered by the circumstances quoted - then there must be a FAULT with the vehicle! Either quote these TB numbers to your dealer, or even better take a copy with you.

DOC

Have you managed to get details from Hillendale regarding what was actually wrong with the drop links they replaced and whether the replacements were the same part number? (See my posting above).

"DOC

Have you managed to get details from Hillendale regarding what was actually wrong with the drop links they replaced and whether the replacements were the same part number? (See my posting above)."

Still trying to get hold of the tech guy there!

The doc wrote:

"DOC

Have you managed to get details from Hillendale regarding what was actually wrong with the drop links they replaced and whether the replacements were the same part number? (See my posting above)."

Still trying to get hold of the tech guy there!

Hi everyone - I've just stumbled across your forum and have read the postings on this particular subject with great interest. I have a one month old TDV6 HSE - and yes, you guessed it, I have the annoying knocking noise from the front suspension too!

It's been back to the dealer twice. First time to have the suspension bushes tightened (no effect) and second to have a 'lower arm (?)' replaced.

This led to a minor improvement in the noise, but it certainly hasn't cured the problem.

Like the rest of you, I'm determined not to let the issue drop and I won't be fobbed off with rubbish about the noise being a 'characteristic of the DR system'.

I'm therefore keen to hear if anyone actually gets anywhere near solving the problem with their dealer - I'll be going back to see mine again next week.

Smiffy

Welcome aboard Smiffy, you will find plenty to read and more to laugh at on these forums! 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

"It was the night before Christmas and nothing could be heard .............































...............except for the bloody knock, knock, knocking of the front suspension of a few RRSports!"

MERRY CHRISTMAS EVERYONE - and may your knocks be little ones.

Jo

Agreed

We need a meet in the new year in the Midlands?

Home of the Legend?

Only to compare noises of course!

I can't be the only one with a bad diagnosis!

Quote:

"The doc"]


I Collected my car today at 4pm from HILLENDALE in NELSON (FAB GUYS - THANKS AGAIN) and guess what????

NO knocking sound!

They replaced the Anti roll bar drop link bushes which were U/S - and that’s it - no excuses - no LR said - Just drop it of and they fix it!

I was so please I went on a 4 hour tour through Manchester etc to find all the potholes that I could and NO KNOCKING!

Well DOC I am glad you got your "Knock, Knock, Knocking Sport sorted.

As a relatively newbie to the forum I have been watching this and many other LR forums with interest. The knocking problem you and many others have identified was replied to by myself in a response to "Noddy" under the following link -;
http://www.rrsport.co.uk/forum/topic4282.html

I did identify 2 potential areas that could cause the "Knocking" problem you guys describe.
I guess I was not far off with my assessment based on the feed back and problem resolution you have received from your chosen LR dealer in erradicating your knocking steering problem.

As my pseudo name suggests I am Ex LR! Have worked in many LR manufacturing areas and along with many other engineers was assigned the problem you guys have been experiencing but on project L322.

I'll keep on dropping into the forum now and again but for now happy new year to you all and best of luck in sorting the issues that you have with your RR Sports.

EXLR

EXLR wrote:

As my pseudo name suggests I am Ex LR! Have worked in many LR manufacturing areas and along with many other engineers was assigned the problem you guys have been experiencing but on project L322.

I'll keep on dropping into the forum now and again but for now happy new year to you all and best of luck in sorting the issues that you have with your RR Sports.

EXLR

Agreed - why not have an official voice or reason - one that works with us to help our land rover brand go forwards!

Doc how about all of us with a knock book our cars into the same dealer on the same day and see if they fob us all off, or sort it out  some of my Previous cars
--------------------------------
P38 Range Rover Autobiography
RRS 2.7 HSE Silver
RRS TDV8 HSE silver
FFRR Vogue black
Disco3 HSE silver
RRS 2.7 HSE silver
RRS 3.0 HSE BALTI BLUE
______________________________
current vehicles
RRS 3.0 L494 Autobiography
Audi R8 V10 Spyder
AC Cobra
Landrover Defender 90
Landrover Defender 110
Suzuki Jimney