2026-07-22 · 5 min read
Mercedes S-Class Coolant Service Malaysia — W222/W223
S-Class W222/W223 coolant: MB 325.6, 3-year change, M276/M256 coolant circuit complexity, Malaysia independent workshop cost RM 200–350.
S-Class Coolant — Complex Multi-Circuit System
W222 S-Class M276 has a dual cooling circuit — a high-temperature loop for the engine and a low-temperature loop for the charge air cooler and transmission cooler. Both loops use MB 325.6 coolant but must be flushed separately. W223 M256 adds a third electric coolant pump. Always use XENTRY to bleed the system after a coolant service.
Cost
- Full coolant service (both circuits): RM 350–600