ABS Issue - Land Rovers Only

57loboy · 06-09-2008, 12:05 PM

Every once in a while with no pattern I've been able to identify, the ABS will kick in (activate) when coming to a normal stop on dry surfaces. Pulses/buzzes as one would expect it to if on slippery surface, etc. Warning lights for ABS and TC come on after that, but reset once car is restarted. It stops fine otherwise. My wife has said it happens once a week for her, happened to me for the first time on Friday night. Pump turns off after 30 seconds, no other warning lights, nothing else seems amiss... Ideas? Thanks!

DWN4WVR · 06-09-2008, 12:46 PM

I have the same exact problem. The only difference is that my TC and ABS lights have been on for a while and do not turn off. I got a new optima the other day and all the lights still came back on even after the battery was disconnected. Looking forward to people's input on this issue.

ArmyRover · 06-09-2008, 02:32 PM

My abs light has been on since I got the truck. Sometimes it doesn't come on and that's when I'm scared as my abs will act exactly as you described except mine will hardly stop and I just coast to a stop and wait for it to fault out so I don't run over someone. Mine only acts like that on a rare start up.

57loboy · 06-10-2008, 05:40 AM

My light only comes on after this fault, then resets itself on the next startup of the vehicle. When illuminated, other than the momentary activation of the ABS, it brakes fine. When the error hasn't occured, ABS function is fine.
Anyone experience this - Bueller...Bueller...?

ohiorover · 06-10-2008, 09:29 AM

There's a way to pull a fault code off the ABS control under the drivers seat, you jump a wire and it blinks a code if i remember. I found a bad speed sensor using it a few years back. Anyone know how to do this? I'll look for a link.

57loboy · 06-11-2008, 10:32 AM

Fault code display unit is under the passenger seat...

Paul Grant · 06-11-2008, 11:56 AM

Tom,
There is a connector under the drivers seat it originates in the Wabco ECU and is for the ABS code reader. Since few of us have the luxury of owning the reader, if you jump the 'black' and 'pink and black' wires with the ignition switch in the on position you will get the ABS light to flash. The way it flashes reveals what is wrong within the ABS system. I have the breakdown of the codes so give me a call and we can try to sort things out.
Cheers,
Paul

PS When are you coming up to the shop?

Jigsaw89 · 07-16-2008, 03:45 PM

If your ABS kicks in for no good reason, you probably have a bad ABS sensor at one of four corners. You have to pull the code to find out which sensor is bad. I had this problem a few years ago and until I got a new ABS sensor, I temporarily disconnected the ABS computer under the driver's seat.

06-09-2008, 12:05 PM	#1 (permalink)
57loboy Senior Member Join Date: Sep 2007 Location: Newtown, CT Posts: 124 Gallery: 0	ABS Issue Every once in a while with no pattern I've been able to identify, the ABS will kick in (activate) when coming to a normal stop on dry surfaces. Pulses/buzzes as one would expect it to if on slippery surface, etc. Warning lights for ABS and TC come on after that, but reset once car is restarted. It stops fine otherwise. My wife has said it happens once a week for her, happened to me for the first time on Friday night. Pump turns off after 30 seconds, no other warning lights, nothing else seems amiss... Ideas? Thanks! __________________ '95 RRC LWB, '05 Suburban Z71 (not stock), '94 F350 (only the cab shell & rear bumper is original), '62 International 404 tractor (red & white) & many other project cars in the past!

06-09-2008, 12:46 PM	#2 (permalink)
DWN4WVR Member Join Date: May 2008 Posts: 16 Gallery: 0	I have the same exact problem. The only difference is that my TC and ABS lights have been on for a while and do not turn off. I got a new optima the other day and all the lights still came back on even after the battery was disconnected. Looking forward to people's input on this issue. __________________ Range Rover HSE (DC Metro area dinner) Range Rover Classic LWB (Offroad lamb griller)

06-09-2008, 02:32 PM	#3 (permalink)
ArmyRover Rebuilding Rover Join Date: Sep 2007 Location: NH Posts: 2,000 Gallery: 0	My abs light has been on since I got the truck. Sometimes it doesn't come on and that's when I'm scared as my abs will act exactly as you described except mine will hardly stop and I just coast to a stop and wait for it to fault out so I don't run over someone. Mine only acts like that on a rare start up. __________________ "Only two defining forces ever offered to die for you, Jesus Christ and the American G.I. One died for your soul, the other for your freedom." http://snhlr.org/ 91 Range Rover Classic 90 RRC Parts truck 94 Saab gas mileage beater

06-10-2008, 05:40 AM	#4 (permalink)
57loboy Senior Member Join Date: Sep 2007 Location: Newtown, CT Posts: 124 Gallery: 0	My light only comes on after this fault, then resets itself on the next startup of the vehicle. When illuminated, other than the momentary activation of the ABS, it brakes fine. When the error hasn't occured, ABS function is fine. Anyone experience this - Bueller...Bueller...? __________________ '95 RRC LWB, '05 Suburban Z71 (not stock), '94 F350 (only the cab shell & rear bumper is original), '62 International 404 tractor (red & white) & many other project cars in the past!

06-11-2008, 10:32 AM	#6 (permalink)
57loboy Senior Member Join Date: Sep 2007 Location: Newtown, CT Posts: 124 Gallery: 0	Fault code display unit is under the passenger seat... __________________ '95 RRC LWB, '05 Suburban Z71 (not stock), '94 F350 (only the cab shell & rear bumper is original), '62 International 404 tractor (red & white) & many other project cars in the past!

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06-10-2008, 09:29 AM	#5 (permalink)
ohiorover Member Join Date: Dec 2004 Posts: 46 Gallery: 0	There's a way to pull a fault code off the ABS control under the drivers seat, you jump a wire and it blinks a code if i remember. I found a bad speed sensor using it a few years back. Anyone know how to do this? I'll look for a link.

06-11-2008, 11:56 AM	#7 (permalink)
Paul Grant Senior Member Join Date: Jun 2005 Location: CT Posts: 892 Gallery: 0	Tom, There is a connector under the drivers seat it originates in the Wabco ECU and is for the ABS code reader. Since few of us have the luxury of owning the reader, if you jump the 'black' and 'pink and black' wires with the ignition switch in the on position you will get the ABS light to flash. The way it flashes reveals what is wrong within the ABS system. I have the breakdown of the codes so give me a call and we can try to sort things out. Cheers, Paul PS When are you coming up to the shop? __________________ Paul Grant paulgrant@mac.com http://stores.ebay.com/Classic-Rovers 203-770-1699

07-16-2008, 03:45 PM	#8 (permalink)
Jigsaw89 Member Join Date: Jul 2007 Location: New Jersey Posts: 27 Gallery: 0	If your ABS kicks in for no good reason, you probably have a bad ABS sensor at one of four corners. You have to pull the code to find out which sensor is bad. I had this problem a few years ago and until I got a new ABS sensor, I temporarily disconnected the ABS computer under the driver's seat. __________________ 1998 Rover HSE 1995 Rover Classic SWB If it's got t!ts, tires or a transom, it's gonna give you trouble!

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