Right Front Speed Sensor - carry out visual inspection

[Slartibartfast]

2011 S Class S350L Diesel W221 (approx 58k miles)

Driving home today the dashboard started showing a number of amber warning messages including: Pre-Safe function limited and ABS plus ESP currently unavailable. Also the Distronic Plus, Hill Start Assist and ECO option were not available- Sods law that it's a Saturday and I won't be able to do anything about this problem until Monday.

I plugged in my icarsoft and under "Adaptive Brake (Chassis CAN bus) it showed "L6/2 (Right Front Speed Sensor): carry out visual inspection

I'm assuming that this sensor needs checking and possibly replacing and I have a few questions that maybe you could help me with:
- Should I not drive the car until this problem is fixed?
- Is an MB independent or Dealer needed? I'm asking this as sometimes my local Independent can't fit me in for a few weeks.
- Is MB OEM part recommended or are there other Manufacturers with same quality? I'm asking this as I'm aware of MB parts supply problems at present.
- Should I be replacing the Left Front speed sensor also?

Many thanks.

 

[ChrisPDuck]

Changing the front wheel speed sensors on my 2006 W221 was an easy DIY job, so I think you could take it to any garage that you trust - doesn't need to be an MB specialist in my opinion. I bought a couple of the sensors from a friend of mine who owns a parts shop - they weren't MB, but a decent brand (Bosch I think). They looked indistinguishable from the ones I took off. They've only been on a year, so I can't say for sure about longevity, but I doubt they're any different from the OE parts in that respect.

Should you drive it? Your choice I think, but I guess it means it when it says ABS and ESP are unavailable. So back to the same as it was for most of the 20th century.

 

[Slartibartfast]

This morning all the warning lights disappeared when I switched the engine on. Might just be a dirty connection but as I already have the new sensors I'll get them fitted at the weekend. I bought genuine MB and only cost £28 each!