2026-07-22 · 5 min read
Mercedes A-Class Alternator Problems Malaysia — W177
W177 A-Class M260/M282 alternator: smart alternator with battery management, IBS sensor interaction, voltage fault codes via XENTRY. Malaysia replacement cost RM 800–1,600.
A-Class W177 Alternator
W177 A-Class M260/M282 smart alternator is belt-driven from the front of the engine. IBS sensor on the negative battery terminal monitors current in and out. When the alternator fails, the IBS data will show negative net current at idle — a reliable XENTRY live-data check before part replacement.
Cost
- Alternator + labour + IBS reset: RM 900–1,700