Replaced Rear Reluctor Ring but still get pulsating when braking

PeterT · January 7, 2022

So as title said replaced rear reluctor rings, disks and pads but still get that pulsating when braking, any help would be appreciate as am planning to get valeted and then garaged till the spring.

Thanks in advance

steve2006 · January 7, 2022

Did you pull diagnostic codes for ABS to determine it was a fault on the rears?

Did you clean all the crud off the sensor heads and measure the resistance of them?

PeterT · January 7, 2022

I took it to a garage to have it done, I will need to check. I am right that there are only rings at the rear?

peasoup39 · January 8, 2022

I am having a similar problem on my 2005. Ever since i have used it over the last 2 years when i brake just before the car stops at say 5mph i get the pulsing through the brake pedle as if i am on ice and the wheels are locking up. Braking is fine but this "whiring noise" is a bit of a pain. If i brake heavily it does not occur.In the last week the abs light came on and my garage tested it and found a fault with the rear left sensor. Stripped it out cleaned it and reset lights. Since then the lights come on intermitantly and the "whiring" is back even more pronounced just as the car comes to a halt. If the sensor is faulty then i can get it changed but it does not explan why i have always had this pulsing as the car is about to stop as the ABS lights have not come on before. If anyone has a rear left sensor going spare or is stripping a car i would be happy to buy it

PeterT · January 8, 2022

Have tried to find these in Uk without success https://www.ebay.co.uk/itm/154757762042?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338365712&toolid=20006&customid=EB35154027&

also do nit seem to make rear right fyi. Am going back to garage Monday and leaving car with them to investigate and also fit new front sensors made by kavo and supplied by autolinkmx5.com both for £60 new.

steve2006 · January 8, 2022

No, there are reluctor rings and sensors on all the hubs not just the rears.

PeterT · January 8, 2022

ARe front and rear the same? Seem to find lots for rear but not for front, thanks

Neil E · January 13, 2022

On 1/8/2022 at 4:39 PM, peasoup39 said:

I am having a similar problem on my 2005. Ever since i have used it over the last 2 years when i brake just before the car stops at say 5mph i get the pulsing through the brake pedle as if i am on ice and the wheels are locking up. Braking is fine but this "whiring noise" is a bit of a pain. If i brake heavily it does not occur.In the last week the abs light came on and my garage tested it and found a fault with the rear left sensor. Stripped it out cleaned it and reset lights. Since then the lights come on intermitantly and the "whiring" is back even more pronounced just as the car comes to a halt. If the sensor is faulty then i can get it changed but it does not explan why i have always had this pulsing as the car is about to stop as the ABS lights have not come on before. If anyone has a rear left sensor going spare or is stripping a car i would be happy to buy it

Classic signs of rear reluctor ring wear. Cleaning the iron filing type debris off the sensor may provide a temporary fix but the ring and often the cover shroud that it sits within needs to be replaced. Sometimes it's just one defective side, sometimes both need to be done. If the garage had to clean the sensor of debris then I suspect the reluctor ring itself is badly worn. It's easy to see with the sensor removed.

PeterT · January 13, 2022

Have decided to replace the dust deflectors as well only £11 each plus VAT from my Lexus Dealer will report back being fitted tomorrow.

peasoup39 · January 20, 2022

I have just purchased the rear sensor from Germany via eBay. For 30 quid plus carriage its an awful lot of kit. As well as the wheel sensor it also includes all the brackets and the hight level adjust so its was not a quick job to fit according to my garage man.

Since having the car it has always had the abs pulse when about to stop and this recently got worse as sometimes the abs system would rattle even when i had left off the brakes. Hey presto all my lights are now out and the pulsing has gone. What a result for such little money.

Having said that the car is now going up for sale. I have loved the last 2 years of ownership but at my age its now time to downsize as i no longer go on long trips . Got to get the personal number off first but that may take a few weeks with the DVLA being so far behind with their work. Still at least i can enjoy it for the next few weeks.