Coolant Loss and Engine Overheating on Jaguar S-Type

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.

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Average mileage: 91,849 (33,000–150,000)
Heating & Air Conditionings affected: 3.0L V6, 4.0L V8
7 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006
41 people reported this problem
19 people shared problem details
2004 Jaguar S-Type87,000
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.
2006 Jaguar S-Type67,000
top hose connection nipple broke at tank side. very weak design.
2003 Jaguar S-Type140,000
Car is overheating. Add engine coolant light was coming on
2000 Jaguar S-Type113,000
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?
2006 Jaguar S-Type68,000
This just happened on my 2006 S-type. Must be design or part flaw.
2004 Jaguar S-Type33,000
still leaking and filling....
2006 Jaguar S-Type92,000
leak in Coolent Reservoir & tube
2004 Jaguar S-Type75,000
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.
Engine is not overheating. Leak starts as soon as I park and turn off the engine. No indications that the paddle of coolants are coming from the engine. Accumulated paddle is below the coolant reservoir. No indication of leak when the car is park for a long time.
2004 Jaguar S-Type78,000
The motor of the car over heats, coolant will drain extremely quick, and the transmission slips.
2000 Jaguar S-Type90,000
very slight coolant lose, found very small crack in coolant reservoir. Replaced with new reservoir from Ford dealer. 2000 Lincoln LS (same tank)
2003 Jaguar S-Type104,000
Coolant loss and overheat
I hear a gurgling noise when I turn off the ignition.
2003 Jaguar S-Type56,656
Kept smelling Antifreeze fluid. checked the reservoir and saw areas of leak. when I push on the hose it broke off and had to replace reservoir tank.
2000 Jaguar S-Type118,000
Replace head gasket(s)
2000 Jaguar S-Type55,000
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!!
2002 Jaguar S-Type110,000
leak antifreeze
2002 Jaguar S-Type80,000
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
2001 Jaguar S-Type150,000
just spontaneously began leaking when i inspected it myself i noticed the trail from the reservoir
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