Coolant Leak Due to Cracked/Broken Heater Core Outlet Housing on Mercedes-Benz S320

A cracked or broken heater core outlet housing can cause a coolant leak near the bulkhead (firewall). Our technicians remind us that coolant leaks should be repaired in order to avoid overheating the engine due to coolant loss.

RepairPal Verified
Average mileage: 107,710 (95,420–120,000)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
8 people reported this problem
2 people shared problem details
replaced part 140-832-1696 ..
HEATER AUXILIARY PUMP IS LEAKING AND NEEDS REPAIR OR REPLACEMENT.
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