XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Is my car too low?

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Old Jul 10, 2022 | 10:08 AM
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Default Is my car too low?

Hello

I have no error codes or suspension with icarsoft reader. Yet I feel that my car's front is lower than the rear as you see in the picture. Is this normal?


 
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Old Jul 10, 2022 | 01:01 PM
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Seems to be to low, is it similar on the other side?
 
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Old Jul 10, 2022 | 02:11 PM
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When setting the ride height using WDS or IDS, there are measurements that are put into the program to calibrate the suspension.

Jaguar special tool 204-484 can be used but a metric tape measure will work for inputting the info.

People lower their cars by 'lying' to the program and it adjusts itself accordingly.

You can raise or lower the car by 'fooling' the ride height sensor(s) with metal brackets to move the pivot point.

The correct way is with WDS/IDS but not everyone has access to the equipment.
 
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Old Jul 10, 2022 | 02:12 PM
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Yes; both front sides are the same.
 
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Old Jul 10, 2022 | 02:41 PM
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Too low, should be 2-3 fingers above the tyre or like the rear.
It looks like an "overnight let-down", normally pumps up on unlock, or when the engine starts and the compressor runs.
My own car does that, sometimes, and only the front or often so.
 
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Old Jul 10, 2022 | 03:42 PM
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Thank you, everyone.

Where are the front ride sensors located? I think mine may need some TLC. Also anyone with icarsoft LR2; how can I read ride height sensors? and if I can; what is the default (factory) value? Also what are WDS or IDS exactly?
 
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Old Jul 11, 2022 | 03:49 AM
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Default Suspension sencors location

Originally Posted by pkoko
Thank you, everyone.

Where are the front ride sensors located? I think mine may need some TLC. Also anyone with icarsoft LR2; how can I read ride height sensors? and if I can; what is the default (factory) value? Also what are WDS or IDS exactly?
There is only one hight suspension sencor it's on the left front by the strut mine went it was about £45 here in South Wales UK Britain on left hand drive cars it's that side from Robert rawle
 
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Old Jul 11, 2022 | 05:34 AM
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Originally Posted by Robert Edwin rawle tangerinedream1
There is only one hight suspension sencor it's on the left front by the strut mine went it was about £45 here in South Wales UK Britain on left hand drive cars it's that side from Robert rawle
Thank you. So is the ride sensor in the same side as "air compressor"?

Also, why did you replace yours? I think mine may have been "moved" when the air compressor was rebuilt.
 
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Old Jul 11, 2022 | 08:08 AM
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Default air suspension location sensor

Originally Posted by pkoko
Thank you. So is the ride sensor in the same side as "air compressor"?

Also, why did you replace yours? I think mine may have been "moved" when the air compressor was rebuilt.
  1. ​​​Yes its on the same side as the air suspension pump my front end went up to high it messed up all the settings my module which is behind the back seat stopped working had a second hand one on ebay for £50 changed that stayed the same on the computer in the garage said the module is working now but it came up the front levering sensor stopped working put a new one on set the ride high on the computer bingo working all suspension level spot on from Robert rawle South Wales UK Britain
 
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Old Jul 11, 2022 | 09:30 AM
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Running change to suspension G26872-ONWARD

 
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Old Jul 14, 2022 | 12:04 PM
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I would really appreciate a little more help here. I can't go to my "local" jaguar dealer for repairs as they only service 10 yr or new cars (it is a stupid rule; I know). My independent has no experience with air suspension on Jags. They don't know how to program the ride height etc. They can only replace the sensor or other parts etc.
Will replacing the sensor fix the problem without re-programming?
 
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Old Jul 14, 2022 | 01:15 PM
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Default Air suspension sensor

Originally Posted by pkoko
I would really appreciate a little more help here. I can't go to my "local" jaguar dealer for repairs as they only service 10 yr or new cars (it is a stupid rule; I know). My independent has no experience with air suspension on Jags. They don't know how to program the ride height etc. They can only replace the sensor or other parts etc.
Will replacing the sensor fix the problem without re-programming?
​​​​​​it might work if you change the sensor another thing change the relay as well they are under £10 it's in the engine bay fuse box when you open the bonnet it's on the left side by the abs pump the big black box by the headlight try that just pull it out replace it will take seconds to do let me know from Robert rawle South Wales UK Britain

My xjr x350 2005


rawle
 
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Old Jul 14, 2022 | 03:20 PM
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Originally Posted by pkoko
Will replacing the sensor fix the problem without re-programming?
See post #3. You might be able to "adjust the sensor".
 
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Old Jul 14, 2022 | 05:19 PM
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Correct height for X358: 389 / 373mm front / rear measured from hub center. Every time You remove or disconnect the height sensor, You must then calibrate the suspension. The rule is simple: if You have the X350, you need to be familiar with the SDD. There are several suspension procedures, including calibration, pre-geometry, remedy for down-up movements - You usually feel it when stopping on red, others. It cannot be permanently controlled without the software.
 
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Old Jul 15, 2022 | 09:52 AM
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If the car raises to normal height after starting, then the issue is unlikely to be the sensor, and more likely an air problem. If the car stays low all the time, and the compressor works, then it might be a problem associated with the sensor. Because there's only one sensor, a single failure can cause ride height. It might be the actual sensor electrics, or the bracket holding it might be bent. Maybe a photo of the area with the wheel off might allow comparisons? HTH, Dave
 
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Old Jul 15, 2022 | 10:27 AM
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Originally Posted by DaveAllen
If the car raises to normal height after starting, then the issue is unlikely to be the sensor, and more likely an air problem. If the car stays low all the time, and the compressor works, then it might be a problem associated with the sensor. Because there's only one sensor, a single failure can cause ride height. It might be the actual sensor electrics, or the bracket holding it might be bent. Maybe a photo of the area with the wheel off might allow comparisons? HTH, Dave
The car remains the same height. I can easily lift the car\wheel and take a picture. It is on the driver's side (near the air compressor), right?

I will do that later tonight. It should be fairly simple.
 
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Old Jul 15, 2022 | 12:31 PM
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Sensor is on the Left hand side - connected to lower control arm.

This link has more - including a training manual on the system, and comments on the sensor. https://www.jaguarforums.com/forum/x...sensor-172555/

The manual was written before the front RHS sensor was deleted, so it shows four, but as noted above, cars built after 2003 only have three.

Be careful jacking etc!

Note that there might be a fuse to pull, or some procedure required to make sure the air system doesn't go into jack mode and deflate the shocks. If it goes super low, it can be difficult to get the jack out! Depends on jack etc. I didn't do this when I removed the compressor for overhaul.

Dave

 
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Old Jul 17, 2022 | 11:11 AM
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I swear to everyone; my car has a mind of its own. While looking for codes in my code scanner ( and falsely wishing that I can reprogram the ride sensor); I saw a 2 DTC in the steering module. First one was steering angle was out of range. Second one was some power steering module voltage was out of range. I am sorry that I didn't write them down. After clearing the codes; I noticed immediately the car rise up a little.

I feel the car looks normal or close to it. But my ride height sensor readings are -3mm for the front and +0-1 mm for rear. And I believe with proper reprogramming; I can easily get it to 0-1 mm.


Is a tool other than ssd to reprogram the ride sensors ?
 

Last edited by pkoko; Jul 17, 2022 at 12:14 PM.
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Old Jul 18, 2022 | 10:44 PM
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bump for info on re-programing the front ride sensor. I don't think mine is faulty. Any tools other than SSD (if this is the only way; do most independents have access/familiar to it?) to do this?
 
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Old Jul 21, 2022 | 09:56 PM
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I ordered a new ride sensor and hopefully the new one fixes the problem. If not; it is time for me to look for an independent shop in Indianapolis to re-program it.
 
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