L322 Brake judder ABS?

Hello, I have a 2004 Td6 Vogue, I went abroad for 3 months and the car was stood and never moved. One rear wheel was seized and finally freed itself after an hour of messing around with it.
I took it for a drive and noticed a judder on the brakes, it can be felt through the steering wheel. It happens at all speeds, although when you are going faster, the judder is more violent and shakes the car quite a bit.
I've got allcoms and put that on the car, at first it wouldn't read the ABS ECU so I checked all the fuses, checked the plug and finally got into the ECU. It shows a temporary deactivation, it was showing this before I parked it up and it was driving fine then as well.
There are no lights on the dash, the DSC button does not work and it does not light up on ignition, this is why I believe it is something other than warped discs.
What do you guys think?
Thanks
Qasim

Do you get the ABS/DSC light on at bulb check when ignition turned to position 2?

Another check is to use the hidden menu in the cluster to run a lights and dials check and see if the light lights up.....

if it does, then I would look closer at the claiper and disc.....if it still doesn't light, either the bulb has gone south or some unscrupulous so and so has covered it up to mask a hidden fault.

Hiya.
No, I don't get the ABS or DSC lights on the cluster test or on ignition.
One thing I forgot to mention was that I also feel a pulsing when applying the brake. The brake is depressed and then it rebounds and then is depressed again. This happens at all speeds, but is more noticeable at lower speeds due to the low rate of pulsing.

There is more afoot then....

It definatley sounds like you have a sticky caliper or warped disc then if the pedal pulses and frequency is dependant on road speed.

Also, I would investigate the lack of ABS/DSC light also..... could be the lamp is covered inside the cluster to mask a fault, or the ABS ECU has gone south!

If the wheel was seized, odds on the brake pad had rusted onto the disc. Might be the time for new discs and pads.

So just had a look after driving for a while. The front right side is completely clear in terms of rust in the path of the brake pads, the rest still have some rust on the surface. So am I right in saying the front right is the one that is sticking

Qasimahmed said:

So just had a look after driving for a while. The front right side is completely clear in terms of rust in the path of the brake pads, the rest still have some rust on the surface. So am I right in saying the front right is the one that is sticking

Click to expand...

Could be, or it could be that it was less rusted than the others. I'd still be looking at the wheel that was seized.

So I had another look and found some brake pad deposits on the right front disc, but is not all the way around, giving the pulsing and juddey feeling as its braking better on part of the disc.
Did the bed in procedure to try and get rid of the deposits, 60mph to 20mph, 10 times. The braking was better afterwards, no judder. It's been left overnight and I'm going to drive it today, there are still deposits visible on the disc, so depending on the drive, I may have to do it again.
Thanks