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Special oil is required if it is an LSD. Try to locate the label that reads "actung!" or the word "find" on the reverse of the diff case. Since traction control is included on most R129s, LSD is not an option.

Convenient.
Please inform us of your progress.

What was the code?

I would have expected any warnings related to the suspension modification to manifest immediately upon completion of the switch.
According to Johnny, conducting a fault code scan is the initial step required.

I consistently hear positive remarks about Matt at MDB Vaux; he appears to possess substantial expertise regarding Insignias.(similar to frankMB)

Thank you for the counsel. I anticipated that cleaning the Adblue injector, which was not obstructed, would resolve the issue; but, the check engine light reappeared. I have arranged for the vehicle with Oliver at PCS Horndean, highly endorsed by members, to address the NOx sensor problem. As an ent...

I shall endeavour to clean the Adblue injector. Next week, AdBlue crystal cleaner was introduced approximately five weeks ago. Thank you.

Thank you for your feedback. I will consult with the MB dealer for confirmation; however, the vehicle was purchased in 2016 and was not subject to the Dieselgate upgrade. The initial two years of servicing were conducted by the MB dealer. If I install the authentic Nox sensors with the MB Dealers, t...

2016 Mercedes W213 E-Class Estate The engine check light displays the iCarsoft code P229F, indicating a range/performance issue with the NOx sensor in Bank. One Sensor Two. Detracted both upstream and downstream NOx sensors, immersed in injector fluid, and cleansed overnight. Erased fault codes. The...