4RRS wrote:

Answer
A crack in the front suspension knuckle may propagate in the presence of extended exposure to road salt, this may lead to a detachment of the upper suspension arm, which under an extreme avoidance maneuver use conditions may compromise the vehicle’s controllability and increase the risk of a crash.

Well, I am NOT reassured at all, and will continue to inspect my 2017 vehicle on a weekly basis ad infinitum. “If it ain’t broke, don’t fix it” -where’s the fun in that?

Am I right in assuming that my VIN falls outside the range XXXXXXXXXXX136906, as Gremlin not reassured but would explains why no recall. Geoff

Kot wrote:

Engineers blue is used when mating to flat surfaces together then file/grinding paste to remove the high spots.
No way is it every used to find cracks.

Exactly my point, it was mentioned earlier in the thread that the MD had used engineers blue or similar for checking for cracks. Maybe they used it so they didnt find any  BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

I was talking to a LR mechanic whose gossip has generally been accurate and mentioned mine is booked for recall next week. He reckoned mine (64 plate) will get new joints because of the build date. His explanation is LR have identified suspect batches of the components as they have more than 1 supplier for some parts. On cars that have these are KNOWN to be fitted they will be replaced. On cars that they COULD be fitted to they will be inspected and if the suspect parts are fitted then they will be replaced. If they confirm that the suspect parts are not fitted then they will not be replaced as they wont fail.
His take on the risk of failure is that the joint that fails is under most load on full lock and under very little in the straight ahead position - this does seem to fit with the reported failures with all of them at low speed turning into drives or other parking manoeuvres, I've not heard of any incidents at speed? It also fits with "possibility of failure during extreme avoidance manoeuvres"
I don't know how accurate this is but it does seem to provide an explanation about the apparent random recalls and the inspections could be to identify suspect parts rather than looking for cracks?

If the failure happened at speed there probably wouldn't be anyone alive to report it......

It strikes me as odd that the problem seems to be caused by galvanic corrosion from different metals touching each other. Replacing them with the same metals surely will only give more time before it starts happening all over again? BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

"If the failure happened at speed there probably wouldn't be anyone alive to report it" - If people had died then I'm sure the fault would have been discovered during the accident investigation

"It strikes me as odd that the problem seems to be caused by galvanic corrosion from different metals touching each other. Replacing them with the same metals surely will only give more time before it starts happening all over again?"
Where did galvanic corrosion come from? was this not just speculation that some confused with fact?
JLR seem to think it's down to a faulty component and they've got more info than most of us.

Bulletin makes no mention of galvanic corrosion, only part failure due to poor manufacturing

Whereas the Q&A doc states it's due to road salt, which I find ridiculous, however I guess this sounds better to the general public than we used cheap parts and sub standard QA L405 SV Autobiography LWB SDV8, finished in Aston Martin China Grey by ETO division.

Last edited by 4RRS on 17th Sep 2023 8:13pm. Edited 1 time in total

cass wrote:

If people had died then I'm sure the fault would have been discovered during the accident investigation

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Where did galvanic corrosion come from? was this not just speculation that some confused with fact?

Quote:

JLR seem to think it's down to a faulty component and they've got more info than most of us.

4RRS wrote:

Whereas the Q&A doc states it's due to road salt, which I find ridiculous, however I guess this sounds better to the general public than we used cheap parts and sub standard QA

So, it maybe due to road salt and maybe not... They're certainly not mentioning manufacturing defects in the document, which we all know is the cause. Odd how road salt only affects certain vin ranges, maybe they started using a special salt resistant JLR coating on later versions  L405 SV Autobiography LWB SDV8, finished in Aston Martin China Grey by ETO division.

AJGalaxy2012 wrote:

cass wrote:

If people had died then I'm sure the fault would have been discovered during the accident investigation

That would depend on how bad the smash was and it would be easy to say the wheel came off as a result of the crash rather than the opposite.

Quote:

Where did galvanic corrosion come from? was this not just speculation that some confused with fact?

I thought I had read that either in this or other threads about this issue.

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JLR seem to think it's down to a faulty component and they've got more info than most of us.

I dont share your confidence in JLR. It's only a few weeks ago they were denying there was a problem.

If you get peace of mind believing that JLR have your best interests and safety in mind that’s great. Keep swallowing their male cow manure, get your rose tinted specs on and tell yourself you that you have the ultimate driving machine that has no reliability issues and is second to none. Keep repeating it until your brain washing is complete.  BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

You're here why?