DSC Fault warning Light.

[RFX1963]

My car is a 2000 auto SE. with 103K on the clock.

I have recently had this warning show on the dash and it stays on all the time.
Having taken it to a Jag dealer they advised the only fault code showing is listed under Anti lock brakes ....C1286. They advised they would need the car for an hr to identify and assess the problem, as the fault cde does not direct them to the cause.

There does not appear to be any failing of the ABS or DSC. I live along an unmade road, so have been able to test both systems and they work, indeed the skidding wheel on the dash flickers on and off whilst trying to skid the car on acceleration.

It was mentioned a year ago that the break fluid should be replaced. Could this cause issue as it was last replaced 5 years ago, or is this just off the scent.

Could someone provide there experiences of this fault warning light and outcome, please.

[J44EAG]

Thanks for your posting.

My experience with S-type brakes is limited to servicing issues only. Neither of my S-types has had any brake issues so I am unable to give any pointers with this problem.

However, the diagnostic route is definately the way to obtain a good lead direction. Without the diagnosis, you could spend considerable money in guess work.

I`ve always found indipendent garages very knowledgable on elusive problems. Often one of the guys knows the answer straight away.

The heart of an S-type is in the electronics. With the best will in the world, I have to say that sometimes the computorisation does confuse itself and I have in extreme cases of S-type dementure, resorted to disconnection of the negative battery cable for approximately 10 minuets. Often this rather irksome proceedure settles the electronics down again.

This course of action is not unknown but make sure you have the radio pin code before any disconnection takes place.

It may clear your problem or it may not. If it does not, then it is off to the garage again.

Just one more thought. It is possible to accidently "select traction control" off. Has this happened? Could even be that the selection switch is faulty.

Has anyone else had this sort of problem?

Mike Kennedy. JEC S-type Co-ordinator.

[rosemary]

Before going to any Jaguar garage have a look on the rear of each wheel hub at the Reluctor ring,a castellated rotor on the rear of the hub with the ABS sensor fitted in close proximity to the castellations. Corrosion of the castellations and debris are the enemy of efficient sensor operation as is corrosion of the sensor cable connector. This condition gives intermittent fault alarms,e,g, when high pressure cleaners are used to clean the alloy wheels water spray gets in to the connectors. A further contributor to these spurious alarms is the Battery condition, if the battery is at the end of its life charge is not maintained at a healthy level particularly when parked overnight in damp conditions. When first starting the car the drain is sufficient to trigger the DSC alarm. Allowing the car to idle for a few minutes then stopping and restarting usually clears the alarm.

[J44EAG]

A stable voltage platform is needed on these cars. An ailing battery does indeed set off these issues as can a corroded reluctor or a duff sensor wire.

I see my post above goes back to 2009 so this is an old thread. We have learned a bit more since then I`m pleased to say. Other issues that can cause a similar issue is a duff ABS pump and of course corroded connectors and plugs.

You will probably have seen jonjefferies rather more recent post regarding his current ABS and now dash problems. That makes interesting reading and picks up on some of the problems mentioned on this thread.

The front wheel reluctors are vastly better protected within the wheel bearing cartridge behind a removable cover. They stay dry and in good condition. Those on the back drive shafts are totally exposed and corrode like fury. Sad that they could not have been better protected and not a target for interfacial corrosion which builds up on the shaft between that and the reluctor. As the corrosion grows over the years it expands and splits of the corroded reluctor and we then get a DSC problem. The reluctors are not available separately from the shaft so a new or good second hand shaft has to be fitted. Oddly the reluctors for the X-type are available.

Mike

[rosemary]

Hello Mike
Good to hear from you,hope you are keeping well. It looks like most of us with older cars come across the same issues, mine a 2005,2.7d 121k is doing quite well (still original !), with just minor things like top half an engine,EGR diaphragms, cam belts at 80k,torque convertor and gearbox replacement,intercooler, wheel hubs ,cooling system pipe corrosion beneath radiator,
rear suspension bushes and a few sensors e.g rear parking, rain, ambient temp, part from the last I've left the others. All a bit like Trigger's Broom. The parts are worth more than the car. Finally I must have lost my trolley because I'm about to buy an XF. I hope JLR read these Posts and trust they ,heaven forbid, learn simple lessons from them. I cleaned my castellations on the rear wheels with a toothbrush and a small wire brush,cost :-nothing and no DSC alarm

[J44EAG]

Hello Dave,

Good to hear from you again.

Yes, these cars do take some looking after. Regret to say I could not entertain a diesel. Most of us given a reasonable level of ability and a half decent tool kit can keep up with petrol models but a diesel needs such expensive kit and advanced knowledge to keep going. I`m always staggered at the need for such heavy front end of engine maintenance and the number of issues with EGR valves, poppet valves and DPF filters.

At the last seminar economics were discussed petrol v diesel and Dave M said that unless you do more than 30k miles per year, you would find a V6 a more cost effective option. Out of the 36 guys present, 24 ran diesels and some of them had had quite horrific issues which had cost some of them in excess of £5000 a shot to fix. Even then some members were still having further problems. Not for me I`m afraid.

Thanks for the tip on reluctor rings. The rear ones are very exposed and corrode easily.

Cheers, old friend.

Mike

[jeff1954]

Hi Mike
I have a diesel as you might be aware and apart from servicing I havent had to do anything to the engine. It,s coming for 10 years old now and has 58k on the clock I will be booking it in for a cam belt change in the new year which will cost around the £300 mark. It,s a pre DPF model which makes a big difference if you do short jurneys.

But on the whole it is a great car and great performance (Iv,e had it re-mapped a few years ago) which made a big difference. So the diesel is not to be scared of especialy if its pre DPF.

Jeff

[BrizzleJag]

Had the ABS Fault light on and also DSC light, OBD2 identified offside rear. Rear ABS sensor part number XR822753, OEM Jaguar part £120.70. Ordered one off eBay for £19.99 https://www.ebay.co.uk/itm/JAGUAR-S-TYP ... 2749.l2649
Sensor is located just behind the rear disc above the hub, held in place by an 8mm bolt, remove the bolt, pull the sensor out of the locating hole and unplug, plug the new unit in, relocate back in the hole and fasten with the bolt. The lights didn't go straight out on start up but after a short drive one by one they went out.

[Jagfan959]

Had the dreaded DSC light come on 2004 Stype 2.7 TD

Car has been extensively serviced with full history and 164,000 miles (last year had new handbrake module)

Checked the forum and decided to replace the fuel filter as a matter of course (heard about low pressure issues and low fuel etc)

Removed the ABS Pump and conducted a full brake line bleed, it seemed there was a lot of defective substance in the lines like black rubber ball almost, probably from an overdue brake fluid change or defective rubber/line somewhere.

Seems to have cleared the issue and the DSC light has remained off!

Thanks to Chris Gilly's at Gillys Garage on the Wirral for his work on this.