Car Problem Reports

Jaguar S-Type Persistent Coolant Loss Due to Small Leak at Coolant Reservoir

Jaguar S-Type Problem
26 Reports
Me Too

Model Years Affected: 2000, 2001, 2002, 2003, 2004, 2006

Heating & Air Conditionings Affected: 3.0L V6, 4.0L V8

Average Mileage: 87,650 mi (33,000 mi - 150,000 mi)


The plastic coolant reservoir is prone to leak. The reservoir can mysteriously lose coolant or coolant may pool under the engine compartment. If this occurs, the coolant reservoir should be inspected for cracks. If leaks are neglected, the reservoir may fail and cause the engine to overheat.

  • Visitor, , 87,000 mi

    Persistant loss of anti freeze, checked hoses, dealer said I needed a new high pressure hose, $400 later I still had the leak. I found that the bottom of the plastic reservoir was cracked. I purchased one from for $45 and replaced it myself.

    Flag This
  • Visitor, , 67,000 mi

    top hose connection nipple broke at tank side. very weak design.

    Flag This
  • Visitor, , 33,000 mi

    still leaking and filling....

    Flag This
  • Visitor, , 68,000 mi

    This just happened on my 2006 S-type. Must be design or part flaw.

    Flag This
  • Visitor, , 113,000 mi

    Same deal. Coolant backflowing, no internal heat/defrost, etc. and my performance has dropped considerably. "Trusted" mechanic quoted me $800 to replace reservoir and lower PCV valve grommet assembly. Looks like I can get the parts online for $110 and take the hour necessary to replace it myself, unless anyone has info on something I'm missing here?

    Flag This
  • Visitor, , 75,000 mi

    First my lower hose cracked, the replacement was $300+, I noticed some anti freeze still leaking and found the the leaking was from the reservoir, cost about $60.00.

    Flag This
  • Visitor, , 140,000 mi

    Car is overheating. Add engine coolant light was coming on

    Flag This
  • Visitor, , 55,000 mi

    Had the cracked reservoir at 55,000 miles. At 75,000 miles had to replace thermostat. At 100,000 now and wife came home today saying the gauge went all the way to hot and the engine temperature warning came on. Hope it's the thermostat!!

    Flag This
  • Visitor, , 110,000 mi

    leak antifreeze

    Flag This
  • Visitor, , 80,000 mi

    coolant leak on wifes car, she was told it is from reservoir and fender has to be taken off to replace. I just looked at and think thats crapp

    Flag This
+ See more reports