| Author | Message | ||
     Neil Lokuge (Neil) New Member Username: Neil Post Number: 27 Registered: 03-2003 |
Ahhhh! Yes, 4 thousand miles later and the ABS, TC and HDC lights are back on. This last happened three months ago and its bugging the shit out of me, if it were to happen out on a trail I’d really be screwed. It’s going back to the dealer on Monday. Is there anything I can ask the service writer to do in, in addition to replacing the hub sensor, so I wont see this happen again, say in a month or two? Voodoo, holy water anything!!! Yes I know its time for the CDL. Neil 01 D2 w/ 46K miles | ||
| Richard Garza (Rgarza) Member Username: Rgarza Post Number: 45 Registered: 05-2003 |
Did you change your brake pads recently? If so, its probably the rotors. They may need to be replaced. When they get too thin it gets eratic reading from the ABS sensor. That is what is happenig to mine. Dealer gave me info. Richard 00 DII w/47000 | ||
| Kai Dussling (Kai) Member Username: Kai Post Number: 102 Registered: 06-2002 |
My ABS lights were driving me crazy. Long story short, I replaced the rotors and problems solved. I also, found a glitch in an ABS wire as I was doing the change which the dealer replaced. I Think a big part of the DII ABS problem does stem from the rotors. Kai 2002 Disco II w/51000 .....see a pattern...... all of our mileage is close to the same! | ||
| Gerard Brooks (Wizard) New Member Username: Wizard Post Number: 33 Registered: 11-2003 |
I had the same problem with Mrs Wizards Freelander. The HD ABS & TC lights came on one morning when she started it, my local garage recond its "the shuttle valve" after pluging in the laptop,although they couldn,t show me where this valve is and they said they have never changed one before. Rather than fork out £400 to see if this cured the problem i had a poke around myself and found the starter motor power cable was loose and badly burnt, this was shorting out occationally and bringing up the 3 warning lights. I replaced the starter motor and cable reset the lights and its been fine since. I think the cable shorting out when my wife started the engine must have put a spike onto the engine management system. I hope this helps. cheers wizard | ||
| Scott Williams (Swilli) New Member Username: Swilli Post Number: 1 Registered: 01-2004 |
I am having the same problem and am taking the Disco to the dealer tomorrow, I am bringing all these posts so I can have him check each and every one of these suggestions. I just bought my 2000 Disco DII and it has 22K miles on it. Dealer who was not a LR dealer put new pads and rotors all the way around just before I purchased it so I don't think my problem is related to the rotor thickness but could be a install issue. i will update with what the dealer finds out. | ||
| Rene Marin (Rene_m) New Member Username: Rene_m Post Number: 7 Registered: 01-2004 |
I am not following you here how does rotor thickness effect the abs sensor? the sensor reads pulses in side the steering knuckles and not on the rotor or hub? so what would rotor thickness have to do with any abs readings? | ||
| Gerard Brooks (Wizard) Member Username: Wizard Post Number: 42 Registered: 11-2003 |
Tis true the ABs picks up from the CV joint. regards wizard | ||
| Rick Neff (Lostinboston) Senior Member Username: Lostinboston Post Number: 259 Registered: 06-2003 |
The abs pump is strong enough to deal with off roading or oversize tires. If the rotors are unevenly warn that mayalso trigger a light due to the difference in braking between them. Off road tires could also triger a vibration which will cause them to go on. Basically,the system is a mystery, even to the service guys at the deealerships because they couldnt give me a straight answer as to mine kept going on. I just turn it off now when im offroading by startign the truck with the CDL engaged. | ||
| Rene Marin (Rene_m) New Member Username: Rene_m Post Number: 9 Registered: 01-2004 |
Sorry, i just do not see it..I am an ASE master tech and a have my Batchers in Mechanical Engineering, i have never seen or heard of any thing like that...Now worn out or mis matched brake pads,air in the brake line sure.. Rotor, no way unless it is damaged in some way and then you would have a hard pull to one side under braking...Even if one is half the thickness of the other after the first application of the brake pedal the calipers will fill in the gap and from that point it is all even, equal pressure on a equal surface area both sides will have the same friction coefficient.. I think some one is making some extra $$ on some of you. Rene Marin www.crcmotorsports.com rene@crcmotorsports.com.. | ||
| Donald McFarlane (Dsmcf) Member Username: Dsmcf Post Number: 56 Registered: 11-2003 |
just wondering... there is a known problem with the CDL sensor in the early DIIs whereby it will fail and register CDL as engaged. As such the SLABS is disabled when you turn on, just as it would be if you manually engaged CDL prior to reboot. Is your CDL light also illuminated? | ||
| Kai Dussling (Kai) Member Username: Kai Post Number: 103 Registered: 06-2002 |
Rene, That is why the ABS is a big mystery. It doesn't make sense to anyone and noone can figure it out. All i know is, A lot of people have had ABS woes at about 40,000-60,000 miles. They then change pads and rotors and problem solved. Who here has had ABS problems under 20,000 miles?........well,.......anyone?........ The hub and abs sensor are pretty simple and i doubt they are the problem. The problem lies in the fact that when you take your vehicle in for the ABS hard fault, the LRNA manual says to replace these. These are warranty vehicles and they will not replace pads and rotors under warranty. They are just wear parts. Who knows, maybe with a little wear, the pads and rotors may allow the wheel to slip ever so slighty and throw a hard fault. Did you know for '03 the calipers were upgraded and now the vehicle stops 100% better? They knew there was a problem and fixed it by putting in something that could grab the rotor better. Kai | ||
| Donald McFarlane (Dsmcf) Member Username: Dsmcf Post Number: 58 Registered: 11-2003 |
Kai says: "Did you know for '03 the calipers were upgraded and now the vehicle stops 100% better? They knew there was a problem and fixed it by putting in something that could grab the rotor better." What's the mechanical difference? Are they really that much improved? Has anyone looked at retrofitting to earlier model years? | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 88 Registered: 02-2003 |
I had my light come on too in my Disco 2 2001. This is the third time I had it happen and is becoming a real pain. The first time it happened was last winter. It had just snowed about 3 inches and was driving my car in my driveway when I hit the brakes and these lights come on. (Coverered under warranty.) The second time happend while I was leaving the woods. No explination and covered under warranty. The third time it happened was Friday night. I was starting my car up in the metro parking lot. I put my foot on the brake and turned the key and then the Lights came on. I am droping it off at the shop and going to have someone check it out today. (I just had a recall (ABS SLABS) and will have them do that work also. Hopefully the warranty work fixes the problem. I can not figure these lights out. I saw someone said something about the rotors. I have changes my pads every 40k miles (even though there is still 40% of the pad.) I can see were the rotor has a little bit of wear but nothing major. (I will be replacing my rotors next brake pad change anyways.) (Most of my miles are highway miles.) What is the deal with these lights | ||
| Thomas Bielecki (Bielecki) New Member Username: Bielecki Post Number: 7 Registered: 04-2003 |
Kai says: "Did you know for '03 the calipers were upgraded and now the vehicle stops 100% better? They knew there was a problem and fixed it by putting in something that could grab the rotor better." From what I've read the difference in breaking distance at speed between an '03 and say an '01 is only a few feet. There really is no actual performance benefit. The difference lies in the amplification of the breaking per distance one presses the break pedal. I.e. press the break pedal a little in an '03 and you get most of your breaking potential, while in an '01 you have to drive the pedal to the floor to get most of your breaking potential. Overall, the newer systems give you less control -- like a Detriot fast pedal. I could be wrong in all of this.  Either way, I've had 3 hubs replaced so far (almost at 50k) and about 8-10 abs/etc/tc bad data from the sensor readings. It's a pain, I wish there was an easy way to reset this lights without having a Rovacom or Testbook. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 89 Registered: 02-2003 |
I just talked to the shop and it was a bad hub. The explanation I got is they go when they go. I don't know about them but it is expensive to have this same repair constantly. | ||
| Joe Cole (Joe_cole) New Member Username: Joe_cole Post Number: 6 Registered: 07-2003 |
It is a bad sensor and the whole hub assembly needs to be replaced. Sometimes you can re-set the sensor by trying to pull it up and push it back down. It is a bad design to have to repalce the hub not just the sensor, thus the high price for the part. | ||
| Garrett S Larance (Guntherrocks) New Member Username: Guntherrocks Post Number: 32 Registered: 08-2003 |
The problem still remains in the 2003 design as well. | ||
| Richard Garza (Rgarza) Member Username: Rgarza Post Number: 46 Registered: 05-2003 |
The first time this happend to mine they replaced the hub as well. Guess what about a month later the lights came on again. I was in New Mexico and really riding the brakes coming down Ski Apache. Well after a few days of doing that the lights came back on. Went back to the dealer under warranty and asked who changed my brakes. I did it myself. He asked if I replaced the rotors. I didnt. He told me that was the problem and that when the lights come on again just to take it in to get the light reset. Richard 00 DII | ||
| Gerard Brooks (Wizard) Member Username: Wizard Post Number: 43 Registered: 11-2003 |
Dunno if this will help but I brought this up with an independent LR garage in Cardiff this morning and he claim's it is a sticking shuttle valve in the abs pump. Mrs wizards Freelander had the same problem,to which I posted a cure for earlier. But I dont think you all have the same problem as SWMBO. The only draw back to this is an ABS pump costs £1200 from LRUK. The ABS,TC,HDC are all linked to the same fault code. Cheers wizard |
