Hmm... This doesn't look good (R172 SLK55)

[st13phil]

Driving along in Angie's SLK55 this morning and there was a "bong" as a message came up on the instrument cluster, together with a host of warning lights:

After stopping, I restarted the car and now the EML is on too:

Deep joy.

Looks like I'll be booking it in for some diagnostics...

 

[rf065]

My guess is a wheel speed sensor, should not be too expensive outside of main dealers.

 

[BIGDOG]

My guess is a wheel speed sensor, should not be too expensive outside of main dealers.

£90 last time I had to replace one on an MB.

 

[st13phil]

My guess is a wheel speed sensor, should not be too expensive outside of main dealers.

That's what I was sort of hoping, but then the EML warning came on too which is a bit of a mystery.

 

[Smart320]

Came on with all the rest when I had my 55 , it was the wheel sensor as already suggested, hopefully a relatively easy fix

 

[rf065]

That's what I was sort of hoping, but then the EML warning came on too which is a bit of a mystery.

Came on in my R172 also.

 

[MikeInWimbledon]

Have you parked it anywhere new recently?



In leafy, leafy, Wimbledon we have a continuing battle with Squirrels chewing through the "eco-friendly" sensor cables on modern German cars.

A good munch can throw up all kinds of errors on ABS, cruise control, stability, and other sensors.

 

[BIGDOG]

Have you parked it anywhere new recently?

View attachment 163520

In leafy, leafy, Wimbledon we have a continuing battle with Squirrels chewing through the "eco-friendly" sensor cables on modern German cars.

A good munch can throw up all kinds of errors on ABS, cruise control, stability, and other sensors.

Truffle hunting squirrel?

 

[W1ghty]

And a Red Squirrel at that !

 

[st13phil]

Have you parked it anywhere new recently?

No, it lives on our drive where it always has.

Good call though.

 

[Bobby Dazzler]

Sensor seems like the obvious suspect, however I’d be tempted to pop it on a battery conditioner to see if it goes away. Low battery voltage can do strange things to a car, especially if the alternator isn’t performing.

 

[zipdip]

Almost certain it is a wheel speed sensor,last time it happened to me the car had loads of warning lights it was the front left one I even changed it myself because nobody seemed to want this small job,the sensor gets rust under it and fails,I think I could have used the old one again having cleared the rust of it

 

[st13phil]

Sensor seems like the obvious suspect, however I’d be tempted to pop it on a battery conditioner to see if it goes away. Low battery voltage can do strange things to a car, especially if the alternator isn’t performing.

I took it off the Optimate charger yesterday, otherwise that would have been something I’d have done.

 

[pioneercollector]

Yes i am thinking speed sensor - mine is going to be replaced on Thursday ( MOT & Service time ) ....... Fingers crossed that it is just that.

 

[st13phil]

Booked in at Autoclass MK for Monday 18th (I have too many things to do over the next two weeks).

Will provide update when fixed.

 

[Petrol Pete]

Most relatively cheap scan tools will expose a faulty wheel speed sensor in just a short drive .

Let us know how you get on.

 

[Bellow]

Driving along

Sensor and wiring faults will appear as warnings at 'key-on'. Split reluctor rings need the vehicle to be moving before they can report a fault.

 

[Neiltodd]

As said above a low battery can do all those warnings.

 

[st13phil]

As said above a low battery can do all those warnings.

It’s not a low battery.

 

[st13phil]

Sensor and wiring faults will appear as warnings at 'key-on'.

It’s certainly a “key on” warning, so I’m hoping it’s simply a sensor gone bad.

Will know more on 18/11.