brake light,ABS light,TC light on when brakes applied?? - Land Rovers Only

national · 01-24-2005, 05:37 AM

It was doing this every now & then especially when you hammered the brakes quick..now I have changed the brake pads on front & rear as one of the pads was in the rotor & now the brakes feel spongy..doesnt want to stop as good & all 3 lights come on at the same time when brakes are applied normally..any ideas?
Brian

hamrendan · 01-24-2005, 08:48 AM

What year is your Rover.. It sounds like your abs pump is not getting enough pressure, or if you have a pre ABS model 88-90 i think then you may need to get a brake booster rebuild kit, you may as well rebuild the master cylinder while you are at it.. Look at the engine where the brake fluid is ( assuming is a non abs model) the fluid reservior sits atop the master cylinder, which is bolted into the booster ( larger round unit) If there is a leak below where the Master Cylinder and booster connect, you will see the paint peeling off the booster.. that needs to be fixed, and you will probably have a puddle of fluid in the booster.. BTDT..

CoachDitka · 01-24-2005, 10:17 AM

My guess would be ABS accumulator. With the car running, see how many times you can depress the brake pedal until the ABS pump kicks in...

-Coach

national · 01-24-2005, 08:14 PM

Quote:

Originally Posted by CoachDitka

My guess would be ABS accumulator. With the car running, see how many times you can depress the brake pedal until the ABS pump kicks in...

-Coach

Ill try that tomorrow & see what happens..the accumulator is the little ball thing..right?
It is a 98 model RangRover HSE sorry I didnt state that..any ideas of what I need to be looking for on this model then hamrendan?
Thanks,Brian

troverman · 01-25-2005, 01:52 PM

Most all of the brake parts under the hood (pump, accumulator, etc) are incredibly expensive on any Range Rover and certainly the P38 which has a rare electric servo design combined with the super-sophisticated Rover / WABCO ABS system. Did you have any problems when changing the brakes?

I just did pads all the way around on my 4.0 and when compressing the pistons on the the pass front one of the pistons actually popped out! THis led to a slight loss in brake fluid, etc, but the worst problem was the fact that air got in the system and the brakes were very spongy, soft on the first try, pumping the brakes would harden the pedal but quick pumps would cause ABS / brakes / ETC lights all to come on then they would go out.

Before you spend money you should bleed the brake system (maybe even change brake fluid) Air in the system will cause your problems. See if the fluid is at all low--if it has ever dropped below the "min" mark air can get in even if the cap is on!

Unfortunantly bleeding brakes on a RR is not fun--the nature of the ABS system means once air comes in (in my case it was only at the right front wheel piston) the air can spread over the entire brake system, so you have to bleed everything. There are several procedures online, but I used the factory manual to do it as it was the only one which worked. The job involves going around to each wheel as bleeding a little fluid off, plus bleeding three things under the hood, and doing the whole thing twice. You need two people to do it as someone has to operate the pedal and the ignition to turn the brake pump on / off. The good news is you need no special tools. You should have a short plastic hose and a can to collect fluid. That's it. If you don't feel like doing this yourself, take it in-the job (when I had the instructions) only took 1.5 hours and a can of Castrol brake fluid. Not too bad, if you don't mind crawling under the car.

national · 02-07-2005, 03:47 PM

Quote:

Originally Posted by CoachDitka

My guess would be ABS accumulator. With the car running, see how many times you can depress the brake pedal until the ABS pump kicks in...

-Coach

About 1-2 times & the ABS pump comes on..any other ideas? how hard is the accumulator to change & how expensive is the part? no air in the system & no leaks of course..
Brian

lonestarrover · 02-07-2005, 05:29 PM

Sounds like your accumulator is bad, if if the pump turns on after two pumps. I would bleed the system first, if that does not fix the problem you will probably have to change the accumulator. The accumulator screws off with a open ended wrench. Be sure to replace the "O" ring.

01-24-2005, 05:37 AM	#1 (permalink)
national Member Join Date: Oct 2004 Posts: 18 Gallery: 0	brake light,ABS light,TC light on when brakes applied?? It was doing this every now & then especially when you hammered the brakes quick..now I have changed the brake pads on front & rear as one of the pads was in the rotor & now the brakes feel spongy..doesnt want to stop as good & all 3 lights come on at the same time when brakes are applied normally..any ideas? Brian

01-24-2005, 08:48 AM	#2 (permalink)
hamrendan Senior Member Join Date: Sep 2004 Location: Cottonwood CA near Redding Posts: 206 Gallery: 0	What year is your Rover.. It sounds like your abs pump is not getting enough pressure, or if you have a pre ABS model 88-90 i think then you may need to get a brake booster rebuild kit, you may as well rebuild the master cylinder while you are at it.. Look at the engine where the brake fluid is ( assuming is a non abs model) the fluid reservior sits atop the master cylinder, which is bolted into the booster ( larger round unit) If there is a leak below where the Master Cylinder and booster connect, you will see the paint peeling off the booster.. that needs to be fixed, and you will probably have a puddle of fluid in the booster.. BTDT.. __________________ Any advice given in this forum is my 2 cents, which is roughly the value of said advice! Dan Hamren 93 LWB "Dubya" AKA "The Beast"

01-25-2005, 01:52 PM	#5 (permalink)
troverman Senior Member Join Date: Aug 2004 Location: New Hampshire, USA Posts: 269 Gallery: 0	Most all of the brake parts under the hood (pump, accumulator, etc) are incredibly expensive on any Range Rover and certainly the P38 which has a rare electric servo design combined with the super-sophisticated Rover / WABCO ABS system. Did you have any problems when changing the brakes? I just did pads all the way around on my 4.0 and when compressing the pistons on the the pass front one of the pistons actually popped out! THis led to a slight loss in brake fluid, etc, but the worst problem was the fact that air got in the system and the brakes were very spongy, soft on the first try, pumping the brakes would harden the pedal but quick pumps would cause ABS / brakes / ETC lights all to come on then they would go out. Before you spend money you should bleed the brake system (maybe even change brake fluid) Air in the system will cause your problems. See if the fluid is at all low--if it has ever dropped below the "min" mark air can get in even if the cap is on! Unfortunantly bleeding brakes on a RR is not fun--the nature of the ABS system means once air comes in (in my case it was only at the right front wheel piston) the air can spread over the entire brake system, so you have to bleed everything. There are several procedures online, but I used the factory manual to do it as it was the only one which worked. The job involves going around to each wheel as bleeding a little fluid off, plus bleeding three things under the hood, and doing the whole thing twice. You need two people to do it as someone has to operate the pedal and the ignition to turn the brake pump on / off. The good news is you need no special tools. You should have a short plastic hose and a can to collect fluid. That's it. If you don't feel like doing this yourself, take it in-the job (when I had the instructions) only took 1.5 hours and a can of Castrol brake fluid. Not too bad, if you don't mind crawling under the car. __________________ Current: 1992 Range Rover County 2000 Land Rover Discovery II Also current: 1995 Mercedes-Benz E320 Wagon 2002 Volkswagen Eurovan GLS 1996 Ford Explorer LTD 2WD 1982 Volvo 240 GL Diesel Previous Rover: 1995 Range Rover 4.0SE

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01-24-2005, 10:17 AM	#3 (permalink)
CoachDitka Member Join Date: Aug 2004 Posts: 79 Gallery: 0	My guess would be ABS accumulator. With the car running, see how many times you can depress the brake pedal until the ABS pump kicks in... -Coach

02-07-2005, 05:29 PM	#7 (permalink)
lonestarrover Member Join Date: Oct 2004 Posts: 57 Gallery: 0	Sounds like your accumulator is bad, if if the pump turns on after two pumps. I would bleed the system first, if that does not fix the problem you will probably have to change the accumulator. The accumulator screws off with a open ended wrench. Be sure to replace the "O" ring.

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