Mercedes ACM ECU: Vulnerable During Forced Regens
2. Mercedes ACM ECU: Vulnerable During Forced Regens
Forced regens can cause the breather to melt, exposing the ECU to water ingress and potential failure. This issue is particularly problematic for trucks, where the ECU’s location near the exhaust makes it more susceptible to extreme heat during the cycle. In addition to water damage, the heat can melt components on the PCB, leading to significant malfunctions.
Pro Tip: After every forced regen, inspect the breather for signs of melting or damage. If possible, insulate the ECU or temporarily move it away from the exhaust during the regen to reduce heat exposure. Regular checks are critical, especially in wet conditions, to avoid costly downtime.