S211 ('03 with SBC) Help Required ABS & ESP Light on. fault diagnosis please!

[Timster]

Hi Folks.

Having just replaced the air pump for the rear suspension on my '53 plate S211 (E320 cdi) I'm now having bother with the ABS & ESP lights being on. It's stating 2 malfunctions - ABS & ESP fault - Visit workshop.

Drives fine, but SBC H and SBC S don't work. Neither does cruise control but speed limiter does.

I've had the codes read at my local indy and it's pointing to the rear right wheel. We can't get any more specific than no speed sensor info.

The decision to be made is: Do we start by replacing the ABS reluctor ring, or the speed sensor on the wheel. The sensor is jammed on so can't pull it off to try one from the other side. Once we remove it it's going to snap.

Any suggestions?

The reluctor ring replacement parts can be bought for under 50 quid, but several hours labour to put on.

Anyone anytips before I go replacing parts that don't need replacing?

All input gratefully received!

Cheers.

Tim

 

[Timster]

Does anyone have a reluctor ring mounting tool they would be willing to lend to me? They appear to be out of stock just when I'm planning on ordering one!

See photo.

 

[E270 Owner]

I usually drill the sensor out replace and clean the ring thoroughly.

 

[Timster]

So generally the ring doesn't need replacing?

 

[mersum1es]

What I've read, the ring is broken very often...

 

[MB007]

Just done the reluctor rings my 2004 62k on the clock...nothing left of the rings so the sensors couldn't read anything hence the error, £210 inc £20 for both rings direct from MB.