Use a Mercedes-Benz-specific scanner (like Xentry ) to check for associated fault codes.
On models like the W206 C-Class or W223 S-Class with the M254 engine, a failing 48V lithium-ion battery causes brownouts (voltage dips below 36V). The TCU is sensitive to voltage. If the 48V battery dips during the "Top" (start-stop engagement), the TCU logs P061A98 as a collateral fault. mercedesbenz errorp061a98 top
The OBD-II standard allows for a base code followed by two additional digits that provide more specific information about the fault. The suffix "98" is a manufacturer-specific code defined by Mercedes-Benz. When you see the full code "P061A98," the "98" serves as a crucial modifier, pointing to a highly specific root cause: . Use a Mercedes-Benz-specific scanner (like Xentry ) to