Apparently it's any and all SBC issues. BTW the threshold is around 600k.

Here's the thread on the issue over on Benzworld.

https://www.benzworld.org/forums/w211-e-class/2248298-sbc-nhtsa.html

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife