Answer
Sep 21, 2025 - 08:25 PM
On your 2000 Mercedes-Benz ML55 AMG, limp mode usually means the transmission control module (TCM) is still seeing a fault even after replacing parts like the speed sensor and conductor plate. To get it out of limp mode, you’ll first need to clear the stored fault codes with a scanner that can read Mercedes transmission modules — a generic OBD-II scanner often won’t do the trick. If the codes come right back after clearing, that means there’s still an underlying issue. Common causes include wiring or connector problems at the transmission plug (they’re known to leak fluid into the harness), a faulty transmission control module, or incorrect fluid level/type. I’d recommend double-checking the electrical connector for transmission fluid intrusion, verifying you used the correct ATF (Mercedes 236.14 spec or equivalent), and scanning the TCM with a Mercedes-capable tool. That will point you to the exact code keeping the transmission in limp mode.
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