What's next?

[BIRD]

I took my 04 Disco in for the 30K oil change and serviceing. I told them that I had the brake light,TC and ABS come on 3 times since the last service. They changed the front right brake sensor because they said it was a safety issue. Now after 600 milles I now get the same light plus the down hill control light! I do not think the mechanics at the Land Rover here a very good. Is there something else they can look at? Or should I just ask them to replace all the sensors and see what happens with that? I am glade I got the extended warranty from Land Rover. At this rate they will end up re-doing my whole brake system.
The nice thing is on the last service trip I got to use and LR3 for 2 days. It was nice because I had inlaws in town and they all could fit inside. The third row is big enough for a real person to sit back there.

[keptin]

Ive heard brake sensors, ABS wires, ABS modulator and a personal new one, ECU thinking your running air bags when you've been coil sprung the whole time.

All these things will make the TC, ABS and HDC lights come on.


Maybe you can have them replace the ABS modulator.....but they will probably highly resist that considering its $$BANK$$ to replace. When you take it in, ask them to record what codes its throwing....we can then better determine what is your problem that keeps reccuring.

[Muddy Oval]

If they had a clue, they'd hook the computer to it and drive it. You can see the signal from the individual sensors in real time. It's not rocket science to diagnose these things.

[Disco Mike]

Bird,
Have you replaced the front brake pads yet? If so were factory or aftermarket pads installed? Do you get alot of brake squeak?
If you have had the pads replaced, this could be your problem. Some after market pads will shatter and drive the ABS sensors crazy. Even replacing the pads and not using a little extra sound deadening material will cause your truck to throw codes.
I agree with Steve when he says this should be an easy diagnoses.
Take care,
Mike J.

[BIRD]

All the parts on my brakes are stock. I have gotten real good at letting the weight of the truck slow me down. I only use the brakes when I am in town and that is not very often. I do allot of highway driving.

[Muddy Oval]

You know- they probably DID use the testbook to figure that sensor was erroneous, but if the problem is intermittant it can be hard to reproduce in the limited time they have to look at it. If the problem goes an hour between occurances, do you want to pay the shop rate per hour for them to drive it for an hour?
The sensor can pick up faulty pads and freak out- even stock pads can glaze over and squeal etc.

[DiscoSE03]

careful with that loaner lr3.

[BIRD]

I am not worried about the labor charge because it is all under warranty. As for the LR3. I loned it out to my Commanding Officer so he could drive it. He all most got it stuck in the sand at the beach. I forgot to tell him to watch out for the soft sand. I took it out on the Huumer coarse on base and it was a good time. I did not beat it up or anything bad.

[Rovin4life]

Originally Posted by Muddy Oval

You know- they probably DID use the testbook to figure that sensor was erroneous, but if the problem is intermittant it can be hard to reproduce in the limited time they have to look at it. If the problem goes an hour between occurances, do you want to pay the shop rate per hour for them to drive it for an hour?
The sensor can pick up faulty pads and freak out- even stock pads can glaze over and squeal etc.

brake pads and brake fluid exchanges do not affect ABS performance whatsoever. hub seals that breakdown are the cause the abs sensors that break down. Trust me we always put the hubs in along with the sensors because they come back a few weeks later with the same sensor.

ABS problems are known to be intermittent. Shuttle valve problems that result in modulator replacements are also known to be a cause. but all vehicles must be checked with testbook and diagnosed.

and most shops do not charge for a test drive. ITs apart of diag. Most dealers have a driver that they use just for that. Even if it is customer pay or warrantee.

[ezatrine]

Does anyone know how long the "triple-threat" fault light indication will stay dormant following the replacement of the Shuttle Valve and Wheel Speed Sensor?

My concern is whether the Shuttle Valve Repair Kit and Wheel Speed Sensor suggested by my dealer are considered long-term fixes by Land Rover? If not, is there an aftermarket fix for what appears to be a chronic brake system problem?

[Rovin4life]

aftermarkets never fix problems they only make them.

and yes it works.

although the idea of replacing the shuttle valve for much cheaper is a bit scary in my opinion. It will have a boomerang effect for any and all who touch one.

ONce you fix it you will own the ABS lite for good.

[DevilDisco]

Bird,
I just had my 30k service done about 2 weeks ago now. I have an '04 SE. The Trio came on a lot when it was colder out. I called the Dealership and talked to the Sevice Manager to let him know what was going on. I also put a short list of things I wanted them to look at when they picked up the Disco for servicing. They told me I had less than 2k on the pads (They sqeaked every time I hit the brakes). The did not mention any fault of the sensors. The Manager told me that it was very uncommon for him to see brakes last 30k on a Disco, especially in Atlanta with Stop and go. I mostly drive mine for about 5 miles in town and then I hit the highway, in Albany. Its the least stressful way to get to our base and I don't have to hit the brakes ever 30 sec. Since they changed the pads. The Disco stops better now then when I first got it at 17k, the brakes not not squealed at all, and not more light trio.

I have found the Disco is a heavier vehicle than most people are used to and as a result they like to ride the brakes. The don't coast at all, they either gas it or hit the brakes. If you are single and you are the only one that drives the disco then your brakes may not need changing. If you are not, you may want to consider that the other drivers are not as conservative as you are.
Oh, Brakes aren't a warranty item if that is what is causing the sensors to trip so stand by, uless you do them yourself. I know next time I will.