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05 Jaguar XJ8 3,5 tech and problem questions (DSC, Suspension, Vin decoder)
Hi
i have my first jaguar, the car is a x350 2005 3,5 with long wheelsbase. The car is in beautiful jaguar racing green with beige interior.
I have two problems with the car.
First problem it the dsc failure and when i drive the car the traction light also comes on.
I checked with a obd2 scanner and it shows front left wheel speed signal missing (c1233) and it also says yaw rate sensor signal failure (c1280).
I have ordered a new abs wheel speed sensor and will change it since i saw some tear on the one that was there.
I will also try to change the yaw sensor witch i understood is under the shift knob plate where it says (park,neutral,reverse)? Am i correct?
But will only change or fix the yaw sensor if lights in the dash does not go out when abs sensor is replaced.
It can be the abs module also, but hope not!
Do people think this will solve my problems, or should i check anything else? Anyone that has had the same problems and got the problem fixed?
Sometimes when i drive the car after startup it says car to low in the display. What can it be?
The battery is fully charged and after some time the suspensions has the right ride hight.
When i push sport it goes alittle down and car feels firmer, witch seems normal when in sport mode.
What can the message in the display be a result of? Will it be a message if the car has been standing for some days so the air will go out and it needs to get higher? Can it be a relay or fuse?
Because everything seems normal after i push reset and the cars compressor works up the air pressure in the system and the hight gets up. Then it seems normal.
Any sugestions for this problem? When i check with obd2 scanner it does not show any fault codes on that.
And is there a parts catalouge i can use online? To find parts numbers and see parts drawings to find the right parts.
I dont know what version my car is. So where can i check the options codes, all equipment and so on by the cars vin number? Like on bmw nd mercedes you can get all options choosed for the car by using its vin number on bmwvin.com or mbdata.com. Hope jaguar has something simular.
Hope somebody will answer a new jaguar owner. Thanks for the help!
Having replaced a wheel sensor on my current car and also on my previous X350, it is clear these things don't last forever, even though they have no moving parts ! As they're not expensive first thing to do is to replace this part if the fault code says there is no incoming signal from it. However the plug on the sensor may be dirty or corroded, so worth maybe checking for dirt and corrosion first.
Sorry, but I can't answer on the yaw sensor fault
For the car getting too low after standing a while, it indicates rather too much air pressure is being lost overnight so the car starts too low when the owner starts the car to go out in it. If the car comes up to height OK, it indicates the compressor is OK. I reckon you might have a leak at the top on one of the air spring units. When the car is shut-down the system wakes up every 24 hours and checks wheel heights and adjusts the car to level even if lower. The air compressor is not used, just the reservoir air.
Having replaced a wheel sensor on my current car and also on my previous X350, it is clear these things don't last forever, even though they have no moving parts ! As they're not expensive first thing to do is to replace this part if the fault code says there is no incoming signal from it. However the plug on the sensor may be dirty or corroded, so worth maybe checking for dirt and corrosion first.
Sorry, but I can't answer on the yaw sensor fault
For the car getting too low after standing a while, it indicates rather too much air pressure is being lost overnight so the car starts too low when the owner starts the car to go out in it. If the car comes up to height OK, it indicates the compressor is OK. I reckon you might have a leak at the top on one of the air spring units. When the car is shut-down the system wakes up every 24 hours and checks wheel heights and adjusts the car to level even if lower. The air compressor is not used, just the reservoir air.
What miles on the car ?
When i took of the front left abs sensor to clean it i did see it had some tear. I have ordered a new and will replace it to see if it helps, if not i will have to check the yaw sensor. Because that can also result in failure with the dsc, and i also have a fault code on that yaw sensor.
I think its a leak somewhere, and the other day the car was low and the message came up. Just after a night. I cant see if the car is lower in front or rear, but thats probably because of the self leveling as you say the systems do.
However i will first check the relay for the air suspension. And then i will check connections on the top of the air spring units as you suggest. Will go over every connection with soap spray to see, and then maby its just the pipes that has a connection leak to the air spring, or maby i need to change my air springs. Will also check the tank in the trunk. I guess the compressor is working, since car gets right hight after some time. If not i have a repair kit for the compressor.
If the air springs is leaking, should i get new oem ones or arnott air?
Or the arnott coilovers(never air problem again)?
If i use coilovers, the sport button will not have a function and air tank and so on will just be dust collectors.
If just one air spring is broken i will change both on the same axel.
i use the car as a daily driver, but will it be bad to use it when it has a leak? Will it tear the compressor?
I found out noe that its a extra key with alarm and so on.
Anyway this is how the car sits after driving it yesterday, its low in the front. I sprayed the top of the suspension but did not see any leaks. Will look inside the wheel well on the rubber if its okay or broken.
i have read it might be the solenoid in the trunk near the tank, because if that leak its hard to see as the seals inside of the solenoid may be dry make a bad seal. Because my car leaks very slow.
Photo of the car today. Low at the front. So must be either solenoid valve or front struts/suspensions.
She is a beauty!! That is exactly how my 04 was sitting the morning after I purchased her. Surprise for me!! She would then leak down (only in the front) when left sitting for about 8-10 hours during the day and also overnight. I left it for about 2 weeks and then heard a slow leak on the passenger side one morning. I replaced just the one side with an Arnott replacement (I think it was the AS2710). I fully meant to replace the other right after, but it has been 2+ years and I still have not got to it. If I had not heard which one it was I would have gone ahead and done both. You may be able to hear the leak after you park her. I would certainly check all the fittings with soapy water.
You are right about losing the "sport" suspension if you do away with the air and I believe the setting also affects the shift points somewhat. I do not know what else happens if you do away with the air although many have and do not regret it. Also I certainly would change all 4 if that was the course I chose. (Believe me I have thought about it.)
I replaced the air suspension on my 05 VDP right after I got it. $440.00 on Ebay for steel spring struts. I'm not keeping the car forever. I was a little dubious about the low price but they looked fine and so far so good. Ride is a bit harsh,probably stiffer than sport mode. Don,t know about shift points as I didn,t drive it much before. I am however getting excellent fuel mileage.
She is a beauty!! That is exactly how my 04 was sitting the morning after I purchased her. Surprise for me!! She would then leak down (only in the front) when left sitting for about 8-10 hours during the day and also overnight. I left it for about 2 weeks and then heard a slow leak on the passenger side one morning. I replaced just the one side with an Arnott replacement (I think it was the AS2710). I fully meant to replace the other right after, but it has been 2+ years and I still have not got to it. If I had not heard which one it was I would have gone ahead and done both. You may be able to hear the leak after you park her. I would certainly check all the fittings with soapy water.
You are right about losing the "sport" suspension if you do away with the air and I believe the setting also affects the shift points somewhat. I do not know what else happens if you do away with the air although many have and do not regret it. Also I certainly would change all 4 if that was the course I chose. (Believe me I have thought about it.)
Yeah exactly same problem as me. Today i took a closer look at the suspension. The front was down, the rear was not that bad.
But i noticed that the left front was lower then the right front. I guess now the leak is at left front. Will jack up the car to inspect it soon. If its the front left i will replace both legt/right to have them both in same shape. I think i will go for arnott air with comfort setting.
If i find a leak i guess it must be at the front. I will check the solenoid but dont think its the problem.
The front struts are linked together but the rear ones are each on separeted lines.
Originally Posted by Terrific
I replaced the air suspension on my 05 VDP right after I got it. $440.00 on Ebay for steel spring struts. I'm not keeping the car forever. I was a little dubious about the low price but they looked fine and so far so good. Ride is a bit harsh,probably stiffer than sport mode. Don,t know about shift points as I didn,t drive it much before. I am however getting excellent fuel mileage.
Yes know its many Solutions out there and some might be as good as an expensive one, but if the leak is my front struts i will choose arnott air. I could go for coilovers, but i think the car miss its charm if i do it. The airtank, lines, and so on will still be on the car but dont have a function. But if air springs works they are unbetable in comfort, feels like flying on a green cloud.
I just wonder, if the system leaks at the front. And makes the car lower at the front. Will the car detects hight difference front and rear, and adjust down the rear suspensions to have simular hight as front?
Found this diagram, good to use if you have the same problem and wonder how the system is linked together
Did you check your fuel pressure? If is is low that may show up worse on older injectors. Also the gunk on the plugs could be from the wide gaps and misfires. That said you may want to check the compression before you throw a bunch more money in her. A dry and wet test plus a leak down test. Especially in the bad cylinders. Did you try the old coil pack to see if it threw the original codes again?
Did you check your fuel pressure? If is is low that may show up worse on older injectors. Also the gunk on the plugs could be from the wide gaps and misfires. That said you may want to check the compression before you throw a bunch more money in her. A dry and wet test plus a leak down test. Especially in the bad cylinders. Did you try the old coil pack to see if it threw the original codes again?
Today when i drove the car i got warning air suspension too low, suspension faults. When i parked it was low at the front left side. After shopping i drove it and it felt good and had a good hight. After some deiving i got the warnings again.
I drove home and parked and it was different hights on all corners.
I will have the car on jack in the weekend to try to see any leaks. I think i will buy a new solenoid valve anyway, and if i find a suspension leak i will replace them.
Its frustrating not to be able to drive the car without getting the warnings and a bad low rider/hoteod. Hope to solve the issue soon.
Maby coilovers will be the thing anyway if i dont solve it, but eill try to avoid swaping for coilovers
Did you check your fuel pressure? If is is low that may show up worse on older injectors. Also the gunk on the plugs could be from the wide gaps and misfires. That said you may want to check the compression before you throw a bunch more money in her. A dry and wet test plus a leak down test. Especially in the bad cylinders. Did you try the old coil pack to see if it threw the original codes again?
Sorry -Wrong post. I wondered were that went. Sorry.
Today i got the car on a lift. Got to change the wheels speed abs sensor left front, and now the lamps are gone. one problem fixed. Abs and dsc is working.
i got to check the air suspension connections on each strut. No leaks front and no in the rear. Also checked the gasket/rubber on the struts top with spray. Sprayed every connection on the reservoir tank in the trunk and on the solenoid valve. No leak anywere!
i also checked inside the wheel well, to see if it was any damage. Could not see anything, its very hard to see anything and the suspension looked nice. No damage to the seals/rubber.
so what is the possibility here? I will swap the valve block with a new one, since that might leak inside(not possible to see) but any other suggestions? And sometimes after driving a while it gets too low warning. Could it be the solenoid valve?
Hope anyone will give me some wise answers here. Thanks
So i have made a testing set. 1/8 connection for the 4struts. Will test them and see if anyone leaking. If they leak i will see fast. If not problem is another place
Okay, so i found a leak on the front left suspension. Put the pressure up to 7:5 bars and it sunk right away down to 5 and stopped. The other side dropped to 7bar. I replaced them with RMT rebuild ones on both sides in the front. Everything was fine and i drove the car some to test and everything looked fine.
I let the car stand for two days without seeing the car had been low, so guess it was okay.
But today after a drive for about 1hour on the highway, and a stop to take some food. I started the car and everything was okay, but after 5minuts the suspension fault yellow light came up.
I stopped to check if it was different hights, but it was okay. Except for that the car looked alittle high on all four wheels.
What can this be? Any suggestions?
Will i get to see the fault on a normal obd scan? Can it be the relay? Hight sensor? Or maby the valve block thats not letting air out of the system? So it just pumps and gets high?
Hope for a answer and that somebody have some suggestions. This jag begins to get me frustrated, and it my first jag..
05 Jaguar XJ8 3,5 tech and problem questions (DSC, Suspension, Vin decoder)
