General Discussions

1040 topics in this forum

1. OBD II and VAGCOM

   By developer, March 5, 2024
   • 7 replies
   • 1.3k views
   • 
   • Rojoires
   • March 5, 2024

2. Observed: W124 300D pickup vehicle.

   By jennycarlotta, December 13, 2023
   • 13 replies
   • 2.3k views
   • 
   • jennycarlotta
   • December 13, 2023

3. Observing cars in Europe

   By PixelMaster, July 5, 2024
   • 9 replies
   • 1k views
   • 
   • Trevorseaf
   • July 5, 2024

4. Occasional DTC/ABS warning lights

   By Alex1978, August 31, 2024
   • 8 replies
   • 1.1k views
   • 
   • Alex1978
   • August 31, 2024

5. Occasionally fails to start, W221 350d 2011

   By DSM10000, September 17, 2024
   • 14 replies
   • 1.2k views
   • 
   • DSM10000
   • September 17, 2024

6. ODB2 reader triggers "Mercedes Me services limited" error

   By Blu_Ray_UK2007, October 7, 2024
   • 5 replies
   • 1.7k views
   • 
   • Blu_Ray_UK2007
   • October 7, 2024

7. Oil change for R8 V8

   By CheresX, March 9, 2024
   • 16 replies
   • 2.3k views
   • 
   • ByteStorm
   • March 9, 2024

8. Oil change intervals for the BMW 520D

   By CyberNinja, February 13, 2025
   • 6 replies
   • 1.9k views
   • 
   • Rashman4u
   • February 13, 2025

9. Oil Consumption Problem with My Son's R56 Cooper

   By Rojoires, December 5, 2024
   • 6 replies
   • 1.7k views
   • 
   • keithmerc220
   • December 5, 2024

10. Oil in Expansion Tank S212 E250 CDI

    By Chrishazle, November 6, 2024
    • 12 replies
    • 2.2k views
    • 
    • Chrishazle
    • November 6, 2024

11. Oil leak in W205 C200 M274

    By AMG33D, January 23
    • 5 replies
    • 648 views
    • 
    • AMG33D
    • January 23

12. Oil level for the 2020 C-Class coupe

    By clk320x4, January 16
    • 12 replies
    • 691 views
    • 
    • Howard_silver
    • January 16

13. Oil Pressure Regulation, static 30C1

    By IrvesBMW, January 9, 2025
    • 11 replies
    • 2.5k views
    • 
    • BEERMAN
    • January 9, 2025

14. Oil replacement after winter storage

    By jennycarlotta, March 21, 2024
    • 12 replies
    • 1.6k views
    • 
    • SkippyTom
    • March 21, 2024

15. Oily exhaust side of B37 turbo

    By ianwh4, October 29, 2025
    • 7 replies
    • 867 views
    • 
    • drummer
    • October 29, 2025

16. OM642 P0101FA - W213 2019 - Limp mode / limited power

    By Blu_Ray_UK2007, September 13, 2025
    • 4 replies
    • 1.2k views
    • 
    • CyberNinja
    • September 13, 2025

17. OMG, I need your help!

    By CheresX, February 26
    • 8 replies
    • 495 views
    • 
    • ML350_Colin
    • February 26

18. Optima 19 license plate

    By Howard_silver, February 4, 2025
    • 7 replies
    • 1.2k views
    • 
    • Howard_silver
    • February 4, 2025

19. Optimal 20-inch wheel and tyre specifications for a Gen1

    By Trevorseaf, May 29, 2024
    • 12 replies
    • 1.3k views
    • 
    • WiseSage
    • May 29, 2024

20. Optimal location for servicing the W221 S63/S65 in London

    By dave783, June 28, 2025
    • 5 replies
    • 887 views
    • 
    • QuirkEinstein
    • June 29, 2025

21. Optimal positioning of the turbo-catalyst gasket

    By dave783, August 7, 2024
    • 6 replies
    • 1.2k views
    • 
    • ByteStorm
    • August 7, 2024

22. Optimum 300 GLC/4Mo Oil

    By CodeCrusader, October 20, 2023
    • 10 replies
    • 5.3k views
    • 
    • CodeCrusader
    • October 20, 2023

23. Orlando P0171 unresolved issue?

    By KissezFun, December 6, 2024
    • 4 replies
    • 1k views
    • 
    • KissezFun
    • December 6, 2024

24. Over-the-Air updates

    By guyskin, September 21, 2024
    • 9 replies
    • 1.3k views
    • 
    • TDudette
    • September 21, 2024

25. Overhauling the 116d engine.

    By BEERMAN, September 18, 2024
    • 6 replies
    • 889 views
    • 
    • BEERMAN
    • September 18, 2024