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.

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Average mileage: 107,710 (95,420–120,000)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
8 people reported this problem
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Viewing 1 - 2 of 2 problem details
1999 Mercedes-Benz S320 95,420 mi,
replaced part 140-832-1696 ..
1999 Mercedes-Benz S320 120,000 mi,
HEATER AUXILIARY PUMP IS LEAKING AND NEEDS REPAIR OR REPLACEMENT.