ABS & Handbrake Warning Light Issue - Robert hall

robert hall · 11th March 2023, 22:42

Not sure if i am putting my query in the right place. I have a rover75 cdi 2006. The ABS light is on and sometimes the handbrake light also. Mechanic changed the ABS pump from a scrap one which i am reasonably sure was ok when it was running a few years ago. These lights are still on and when tested fault no 6, valve relay is displayed. Any help appreciated.

Matt_75 · 11th March 2023, 22:47

This thread might be of help to you: https://www.the75andztclub.co.uk/for...d.php?t=172287

Reebs · 12th March 2023, 05:50

I’ve changed the name of your thread title to reflect the issue you want help with. This should help to bring it to other peoples attention.

robert hall · 16th March 2023, 00:11

Mechanic found fuses ok. Abs and handbrake light come on when i drive a few yards and then stay on. Wheel sensors test ok on his computer . Tests are done while the vehicle is stationery. Some tell me to put in a new abs modulator this time. The mechanic is having another go at it on Saturday.

Ducati750cc · 16th March 2023, 09:09

Quote:

Originally Posted by robert hall

Mechanic found fuses ok. Abs and handbrake light come on when i drive a few yards and then stay on. Wheel sensors test ok on his computer . Tests are done while the vehicle is stationery. Some tell me to put in a new abs modulator this time. The mechanic is having another go at it on Saturday.

Have you checked the brake fluid level is correct ?

trikey · 16th March 2023, 09:18

Quote:

Originally Posted by Ducati750cc

Have you checked the brake fluid level is correct ?

You would hope so following an abs pump change!

Sent from my SM-G780G using Tapatalk

Matt_75 · 16th March 2023, 10:45

When changing the ABS Modulator for a new one, there's a procedure you have to go through with T4 (see post #19): https://www.the75andztclub.co.uk/for...ad.php?t=63314

robert hall · 17th March 2023, 01:12

Quote:

Originally Posted by Ducati750cc

Have you checked the brake fluid level is correct ?

ABS problem on Rover75 cdti will check the level before the mechanic gets the car on Sat just in case. I forgot to report that the abs and brake light lights were extingushed for a few days after the used abs unit was fitted . in recent days the abs light is flashing very fast.

SD1too · 17th March 2023, 07:21

Quote:

Originally Posted by robert hall

Abs and handbrake light come on when i drive a few yards and then stay on.

Hello Robert,

The "handbrake light" actually covers the whole braking system. It is controlled by the ABS ECU and brake fluid level sensor in addition to the handbrake switch. I therefore think it's likely that your problem is linked to the earlier replacement of the ABS modulator.

Was the correct version of the ABS modulator fitted? KV6 and M47R types have software differences and there are versions for cars with and without traction control. Check the equipment that your car has with the part number of the replacement ABS modulator.
Was T4 used when bleeding the brakes following the replacement?

Simon

robert hall · 18th March 2023, 00:35

Many Thanks everybody for your help. I will find out more details when i am with the mechanic in the morning. Can i assume that the t4 is special software for rovers which is not generally available on most garage computers ?. Can i also enquire should each wheel speed sensor be manually checked for voltage despite the the computer test showing them up as working ok?.

11th March 2023, 22:47	#2
Matt_75 Gets stuck in 75 Saloon Join Date: Apr 2022 Location: North Somerset Posts: 575 Thanks: 13 Thanked 20 Times in 8 Posts	This thread might be of help to you: https://www.the75andztclub.co.uk/for...d.php?t=172287 __________________ Matt 2001 Rover 75 Connoisseur SE 2.5 (BRG) 1999 Rover 75 Club 2.5 (Dorchester Red) 1973 Triumph Dolomite (Honeysuckle)

12th March 2023, 05:50	#3
Reebs Owners Club Director Rover 75 Conn SE V6 / MG ZT 260 SE V8 / MG ZT 180 SE V6 Join Date: Feb 2007 Location: Southampton Posts: 20,960 Thanks: 645 Thanked 6,851 Times in 2,537 Posts	I’ve changed the name of your thread title to reflect the issue you want help with. This should help to bring it to other peoples attention. __________________ Check your trim here . Check your spec here Check your colour here . Check Project Drive here Check your original price here

16th March 2023, 00:11	#4
robert hall Newbie Rover75 Tourer Join Date: Feb 2022 Location: Longford Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Robert Hall Mechanic found fuses ok. Abs and handbrake light come on when i drive a few yards and then stay on. Wheel sensors test ok on his computer . Tests are done while the vehicle is stationery. Some tell me to put in a new abs modulator this time. The mechanic is having another go at it on Saturday.

16th March 2023, 10:45	#7
Matt_75 Gets stuck in 75 Saloon Join Date: Apr 2022 Location: North Somerset Posts: 575 Thanks: 13 Thanked 20 Times in 8 Posts	When changing the ABS Modulator for a new one, there's a procedure you have to go through with T4 (see post #19): https://www.the75andztclub.co.uk/for...ad.php?t=63314 __________________ Matt 2001 Rover 75 Connoisseur SE 2.5 (BRG) 1999 Rover 75 Club 2.5 (Dorchester Red) 1973 Triumph Dolomite (Honeysuckle)

18th March 2023, 00:35	#10
robert hall Newbie Rover75 Tourer Join Date: Feb 2022 Location: Longford Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Robert Hall Many Thanks everybody for your help. I will find out more details when i am with the mechanic in the morning. Can i assume that the t4 is special software for rovers which is not generally available on most garage computers ?. Can i also enquire should each wheel speed sensor be manually checked for voltage despite the the computer test showing them up as working ok?.

11th March 2023, 22:42	#1
robert hall Newbie Rover75 Tourer Join Date: Feb 2022 Location: Longford Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	ABS & Handbrake Warning Light Issue - Robert hall Not sure if i am putting my query in the right place. I have a rover75 cdi 2006. The ABS light is on and sometimes the handbrake light also. Mechanic changed the ABS pump from a scrap one which i am reasonably sure was ok when it was running a few years ago. These lights are still on and when tested fault no 6, valve relay is displayed. Any help appreciated.