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Hey guys, I'm working on a 2018 F-Type R, that was in an accident on the front right corner. Just had some suspension damage and the wheel was pushed back into the windshield washer tank. When I got the car, the tank was empty and one of the pumps was broken. Anyway I replaced the tank, reconnected everything, tested the wipers and the pumps everything worked. I filled up the rear tank, however when the ignition is on or the car is running doesn't matter, it will not transfer the washer fluid from the rear tank to the front. I removed the rear bumper, checked the rear pump by putting 12v to it and the pump works fine. I then checked the level sensor in the front tank, confirmed that the level sensor works as it should. It completes the circuit when the float is down. I then figured out what wire it was (yellow-green) that is the sensor wire that goes to the passenger side floor board, where the Junction Box is located. Checked continuity in that wire and it was fine. I even put a jumper wire between the two terminals of the sensor connector to eliminate a possible faulty sensor and that didn't work either.
Now I'm stumped. I looked up a fuse diagram online and only a one came up for a 2015. In that year, there was a specific fuse in the driver side engine fuse box for the washer fluid transfer pump. I then looked in the box and there is no fuse there. I checked my manual for my 2018 and it does not have a fuse listed for the washer transfer pump. I looked through all the other fuses and the only fuse I can find was in the rear luggage compartment, it's just labelled windshield washer pump and that fuse is fine.
I was hoping to be able to find a wiring diagram for my 2018, not having much luck. Only wiring diagram I was able to locate also shows a fuse for the transfer pump and a relay, but does not sure where that fuse and relay is supposed to be. I think that may have been in an older car as well. Now in the 2018 car it seems that the sensor wire comes directly from the level sensor in the front tank to the junction box and then the computer tells the rear pump to turn on. However, I would expect there to be a fuse for the rear pump somewhere. I just can't find one listed anywhere...
Anyway, I guess if someone has a wiring diagram for a 2018 F-type, that should at least point me in the right direction.
Hey guys, I'm working on a 2018 F-Type R, that was in an accident on the front right corner. Just had some suspension damage and the wheel was pushed back into the windshield washer tank. When I got the car, the tank was empty and one of the pumps was broken. Anyway I replaced the tank, reconnected everything, tested the wipers and the pumps everything worked. I filled up the rear tank, however when the ignition is on or the car is running doesn't matter, it will not transfer the washer fluid from the rear tank to the front. I removed the rear bumper, checked the rear pump by putting 12v to it and the pump works fine. I then checked the level sensor in the front tank, confirmed that the level sensor works as it should. It completes the circuit when the float is down. I then figured out what wire it was (yellow-green) that is the sensor wire that goes to the passenger side floor board, where the Junction Box is located. Checked continuity in that wire and it was fine. I even put a jumper wire between the two terminals of the sensor connector to eliminate a possible faulty sensor and that didn't work either.
Now I'm stumped. I looked up a fuse diagram online and only a one came up for a 2015. In that year, there was a specific fuse in the driver side engine fuse box for the washer fluid transfer pump. I then looked in the box and there is no fuse there. I checked my manual for my 2018 and it does not have a fuse listed for the washer transfer pump. I looked through all the other fuses and the only fuse I can find was in the rear luggage compartment, it's just labelled windshield washer pump and that fuse is fine.
I was hoping to be able to find a wiring diagram for my 2018, not having much luck. Only wiring diagram I was able to locate also shows a fuse for the transfer pump and a relay, but does not sure where that fuse and relay is supposed to be. I think that may have been in an older car as well. Now in the 2018 car it seems that the sensor wire comes directly from the level sensor in the front tank to the junction box and then the computer tells the rear pump to turn on. However, I would expect there to be a fuse for the rear pump somewhere. I just can't find one listed anywhere...
Anyway, I guess if someone has a wiring diagram for a 2018 F-type, that should at least point me in the right direction.
Just wondering if it might be the 'other' washer fuses.
Engine compartment left size #9 - 25a Washer pump or
Engine compartment Right side #1 - 25a Headlight washers.
Check the BJB (Battery Junction Box) in the passenger footwell. The transfer pump is often controlled by a relay and fuse inside that module. It's a common failure point. The relay is usually soldered to the circuit board, so the entire BJB may need replacement if the relay is faulty. Also, double-check for any communication codes in the body control module that might be inhibiting the pump. A dealer-level scan tool is often needed to properly diagnose this system.
do 2018 cars have a BJB? It’s not one of the modules I recall seeing pop up on a module list. I watched a video on YouTube of a guy showing all of the fuse box locations on an F-Type claiming they are all the same up to 2020. I can tell you that the passenger footwell fusebox and the luggage compartment fuse box are completely different. The footwell fuse box does not exist (or at least it’s not in the same place), the module that’s in that spot in my car just has a few connectors to it (I think it’s called Junction Box 1), that’s where I found the sensor wire coming to from the front washer tank level sensor.
I do have Pathfinder and I checked for codes, nothing relevant popped up. I tried doing a “guided test” for washer related issues and it was not helpful either. Tomorrow I will try to see if I can find some Live Data in maybe the BCM that has to do with the washer tank levels. If the transfer pump is computer controlled, I’m assuming there should be a Live Data value in the computer somewhere that tells it if the front tank is full or not.
Just wondering if it might be the 'other' washer fuses.
Engine compartment left size #9 - 25a Washer pump or
Engine compartment Right side #1 - 25a Headlight washers.
which model year car are you finding this fuse listing for? Because in my car, fuse #9 does not exist in the Left compartment.
And fuse #1 in the right side compartment is fine, that one only controls the headlight washer pump.
Well mystery solved... I figured Jaguar would know what they're talking about when writing their Workshop manual... guess not... The manual says the computer constantly monitors the level in the front tank and tops it up as needed. So, when I was testing the sensor, I figured when the sensor read "empty", the transfer pump would kick on. That is not the case. The transfer pump only kicks on when the windshield washer is operated. When I pressed the windshield wash button, the rear pump kicked on and transferred fluid to the front tank. Hopefully this helps someone in the future maybe messing around with the same issue...
Well mystery solved... I figured Jaguar would know what they're talking about when writing their Workshop manual... guess not... The manual says the computer constantly monitors the level in the front tank and tops it up as needed. So, when I was testing the sensor, I figured when the sensor read "empty", the transfer pump would kick on. That is not the case. The transfer pump only kicks on when the windshield washer is operated. When I pressed the windshield wash button, the rear pump kicked on and transferred fluid to the front tank. Hopefully this helps someone in the future maybe messing around with the same issue...
Jeezus - did Rube Goldberg design this most overly complicated way to spray a little fluid on the windshield? The only thing missing is a third pump to send any overspray fluid flowing down the windshield back to the reservoirs.
Windshield washer transfer pump issues
