I really don't know......he got a little indignant with me when I referenced the shocks/compressor. The part is only about $7.00 so I guess it's worth a shot. He was reading a bunch of stuff off and about the only thing I remember is something about burning the compressor out. If the relay wasn't working does anyone know how that would affect everything or if my symptoms would support that?

 

The Air Suspension Relay is Relay 1 in the front power distribution fuse box, in the front right corner of the engine bay (right as faced from the driver's seat). The Air Suspension Control Module powers the relay, which in turn sends power to the compressor, so if the relay is misbehaving the compressor might not always run when the ASCM wants it to. Presumably that might lead to your C2303 fault code, indicating that the compressor has failed to charge the system in the amount of time anticipated by the ASCM.

Please keep us informed - it will be great if the relay solves your ASF.

Cheers,

Don

 

I will report back after I replace it. Thanks for your patience!

Karen

 

Do yourself a favor and get a genuine Jaguar replacement 40A Relay - even if you get one used - the quality is much better than aftermarket. I had a FoMoCo 40A relay in R1 in place of the Orange Jaguar relay causing multiple issues from my compressor working intermittently to a steady battery drain issue causing all sorts of faults when the voltage was down...

 

Yes, thank you for your feedback. I intend to purchase it from the Jaguar dealership.

Karen

 

I purchased the relay from the dealer and to my surprise it is a FoMoCo relay. Put it in, drove about 1 mile, and the ASF message appeared again. Talked to the tech at the Jaguar dealership and he said it could be 1-4 days to diagnose and repair. They do not stock parts. Said most likely he could diagnose in 1-3 hours but then have to wait for parts to come in. I live 3-1/2 to 4 hours from the dealer so could spend a substantial amount on hotel room waiting for repairs. At this point either ignoring the fault message until I get the CAR TOO LOW MESSAGE (I have been driving the car with the fault message coming on intermittently for about 3 years) or converting the suspension to coils is looking like the best option. Any feedback is appreciated. I have thrown all the money I intend to at the car without a permanent resolution.

 

I just wanted to thank everyone for all their help with my ASF problem. Due to the distance to the dealer and the need to have a car I can depend on and feel safe driving, I have chosen to go with the conversion kit and do away with the air suspension. I chose the Arnott conversion kit. Hopefully, I will enjoy many years of trouble free driving.

 

Sounds like a wise decision to me. Good luck with the conversion and keep enjoying your Jag!

Guus

 

I would like to do the conversion as well, but I'm scared to death that once its all said and done, I won't like how it rides.

 

I am no expert but will be happy to report back on my feelings on the conversion. When I spoke with the Arnott rep, he stated customers had complimented him on the ride quality. My mechanic says he has converted vehicles other than Jaguar to coils, and they are happy with the result. Bear in mind, my Jauguar is used for pleasure driving. I chose Arnott because, after calling other companies that sell conversion kits, they were the only one who sold a kit that has instructions to remove the ASF message as well as the CATS message without the need to hit a reset button. As a final note, I really don't know anything about suspension conversion kits or related parts. I keep referring to this as a coil conversion but wanted to add that the rep said they are gas shocks.

 

My concern is due to the fact that the streets and freeways here are in terrible condition and the air ride is bumpy enough already. I don't want the coilovers if its going to make it even bumpier.

 

Yes, I also feel at times the air ride is a little bumpy. I will post after installation my feelings on the ride if you want. Don't know if it will be of much help because opnions are always subjective.

 

I'm sure we all would appreciate follow up and feedback. Thanks

 

My coil conversion was completed today. After driving the car for awhile, I can't really tell much difference in the ride. I think the car may sit just a tad higher but not much. One of the original shocks was leaking so I am assuming that is why I was receiving the air suspension fault message. I paid about $1470 for the conversion kit, and my mechanic charged me $400 for installation. Kind of a spendy endeavor, but I am relieved to have a permanent solution. He said the most difficult part was getting the backseat back in place after pulling it forward to disable the wiring behind it.

 

Thanks for the follow-up report, olypen123. We're glad your peace of mind has been restored.

Cheers,

Don

 

I have been reading this thread very closely because my 05 XJ has almost the same symptoms (I actually started my own thread on it). Don B has been giving me some similar advice. I was really hoping that one of your mini-fixes was going to make that ASF light go away for good. Based on your decision to go with coils it's starting to look like I will wind up doing the same thing. My independent Jag mechanic uses Bilstein replacement shocks and charges $2,200.

 

Well, the ASF light is gone for good now. I am no expert by any means but am happy with the conversion. Others may not like the ride; to me it is fine. I need a dependable car and after reading posts where some had replaced the compressor and shocks and were still getting the ASF message, I decided for my situation it was the most sensible choice. There are also sensors that can go goofy. Someone who can repair themself might choose a different solution. Suncore Industries will pay $30 for useable cores. They rebuild them. They will send shipping labels that pay the postage. I hope if you choose to convert your suspension, you are pleased with it. Let us know.

 

boy a,m i glad i found this thread.i started my own but has only 4 weeks of knowledge not 4 years.my jag is doing this asf light comes on after 1.5 to 3 miles.i think is high ride hight ,but measures properly to specs i was given from center of wheel to top of wheel arc.--ride is harse ,my friends say it is also.1 funny thing its my daily driver and took it to lunch at work the other day.5 of us .the smallest of us sat in front with me.largest guy +2 sat in back .got low ride warning .2 mile ride .got out watched car rise 2-4 inches when unloaded...on the way back put little guy in back and big guy in front(they didnt like it) but didn,t have low ride----i have a scanner and i can reset suspension codes ---have lot of extra parts ,have swaped the wabco box in the back.bur still having troble---might swap manifold in trunk now

 

Hello and Thank You for all the information presented in the Forums.I am working on a 2004 xj 8 Vdp with 98,000 miles. The car has a c2303 ,ASF,and vehicle too low . I have identified a problem that the compressor is not turning on because the relay has no power on the winding side . I can jump the contact side of the relay and the compressor runs. The winding side of the relay get a signal via a red/black wire from the ASM located behind the rear seat.
What criteria tells the ASM to send a signal to The Relay #1 ? Any help will greatly be appreciated!
��. Catricks

 

There has been a bad connection found at one of the plugs at the ASM

It was one of the pins and it's socket.

In that case it was a connection to a height sensor.