andys86498ft said:
After parking my Jaguar F-Type P300 indoors for three full days without starting or moving the car, I noticed a water stain underneath the front right wheel arch, near the undertray area. The stain remained visibly wet even after 72 hours of stationary parking in a dry indoor environment, which seems unusual.
I wiped the liquid with tissue paper. It had a noticeable smell, but the tissue did not show any discoloration. The liquid did not feel oily, but I’m concerned it may not be just condensation or car wash residue.
The car previously underwent repairs for coolant leakage one month ago. I’m now worried this could be another instance of coolant seeping from a different location.
In that case something must be leaking and it could very well be related to the front washer fluid reservoir (mentioned earlier in this topic) which is located in the front right wheel arch, behind the liner. To be sure that its not an engine coolant leak have you checked the coolant reservoir level to see whether or not its dropping?
andys86498ft said:
I took the car to the factory for inspection yesterday.
The inspection result showed that the vehicle was in good condition and had no water leakage.
The original factory uses a machine to perform a pressure test to test whether there is any leakage in the coolant and wiper water.
The test results showed that neither of them was leaking.
Regarding my question to the manufacturer: I filled the wiper water until the water level reached the visible area, and the next day I saw why the water level was significantly reduced. The manufacturer gave the following answer:
Because the water pipe that transmits wiper water from the rear trunk entrance to the wiper water storage tank in the middle of the right front is very long, and the wiper water I added is retained in the water pipe, it will overflow through the air holes in the wiper water storage tank. This is inevitable and it is not a leak in the water pipe or the wiper water storage tank.
I accepted what they said, so I just regarded this phenomenon as normal from now on.
The above information is provided to those who own F type.
I've had no washer fluid leaks (including normal ones!) on my car after many years of ownership.
Nothing I've seen in TOPIx states the washer fluid “will overflow through the air holes in the wiper water storage tank”. Also, in the ‘Fluid Level Checks’ section on https://www.ownerinfo.jaguar.com/ the ‘TOPPING UP THE WASHER FLUID’ info states...“Top up the reservoir until the fluid is visible in the filler neck”. This again has no mention of washer fluid overflowing through the air holes in the wiper water storage tank. There is a small breather hole in the rear washer fluid reservoir filler cap which allows air to enter the reservoir as fluid is pumped out, but if any washer fluid was to overflow from that it would run out of the drain holes in the plastic channel alongside it and onto the floor/ground at the rear of the vehicle.
TOPIx does state the following info...
WASHER FLUID LEVEL SENSORS
"The low level sensors have a float, with integral magnet. Each sensor has a contact, which is normally open when the reservoir is full. When the fluid level reduces to approximately 1 litre, the magnetic float pivots down, which causes the switch contact to close. This closed circuit is sensed by the rear washer fluid reservoir transfer pump. The transfer pump will transfer the washer fluid until the front washer fluid reservoir level sensor sends a signal confirming the front washer fluid level is full."
"The washer fluid transfer should take 10 seconds. If the pump is still running after 15 seconds it will be disabled for 10 minutes to protect the pump."
"The Instrument Cluster (IC) monitors the fluid level sensor continuously. The IC checks the rear washer reservoir fluid level sensor when the ignition is switched on to give the driver an early warning of the low fluid level. The IC then monitors the sensor value over a 25 second period when the ignition is on to prevent invalid messages due to fluid 'sloshing' in the reservoir."
"When a low fluid level signal is transmitted to the IC, a 'WASHER FLUID LOW' message is displayed in the IC's message centre. The first display of this message, or illumination of the indicator, is accompanied by a 'chime' sound to alert the driver to the low fluid level."
See the comprehensive TOPIx information on the wipers and washers that I posted here...https://www.ftypeforums.co.uk/viewtopic.php?p=58742#p58742
