Faulty Low Battery Warning is a Thing?
#1
Faulty Low Battery Warning is a Thing?
Hi guys
Getting a low battery warning when turning car off - i had it hooked up to a battery charger overnight and still getting the same warning
The low battery warning means i get no interior lights on turn off/unlock and i can't open the electric trunk externally
The car starts fine, there is absolutely no issue with turnover
Is there an issue with a faulty battery warning?
Getting a low battery warning when turning car off - i had it hooked up to a battery charger overnight and still getting the same warning
The low battery warning means i get no interior lights on turn off/unlock and i can't open the electric trunk externally
The car starts fine, there is absolutely no issue with turnover
Is there an issue with a faulty battery warning?
#3
#4
#6
disconnecting battery seems to have fixed it - will have to monitor over next few days
while disconnected, i ended up charging the battery as well just in case
only settings i lost was date/time
but the auto up windows doesn't work now, i tried relearning by holding both window switches up for a few seconds but didnt work
does anyone the window reset procedure?
while disconnected, i ended up charging the battery as well just in case
only settings i lost was date/time
but the auto up windows doesn't work now, i tried relearning by holding both window switches up for a few seconds but didnt work
does anyone the window reset procedure?
#7
When you connect the battery charger / tender do not put the negative clamp directly to the battery, put it on the earth point in the middle of the boot/trunk floor, you can see the thick black cable bolted to a stud there, follow it back to the negative of the battery to be sure, if you're not sure.
The battery monitoring module gets confused if you charge directly to the negative of the battery. Because with the engine off it expects 12.6V or thereabouts, but a charger puts out a higher voltage like 13+, so the battery monitoring module resets its "minimum" to the voltage that the charger is putting out. Then when you disconnect the charger the voltage from the battery is lower, so the car will throw up low voltage warnings.
By connecting the negative of the charger to the earthing stud it's charging on the "other side" of the monitor so this resetting of the minimum voltage doesn't happen.
The battery monitoring module gets confused if you charge directly to the negative of the battery. Because with the engine off it expects 12.6V or thereabouts, but a charger puts out a higher voltage like 13+, so the battery monitoring module resets its "minimum" to the voltage that the charger is putting out. Then when you disconnect the charger the voltage from the battery is lower, so the car will throw up low voltage warnings.
By connecting the negative of the charger to the earthing stud it's charging on the "other side" of the monitor so this resetting of the minimum voltage doesn't happen.
Trending Topics
#8
Lance (Unhingd) has posted the procedure a number of times - try searching posts by him, with 'window' in them.
#9
The process needs to be repeated 4-5 times before it programs itself.
#10
It's on p. 140 of my first-edition manual. Look in the index under Windows, Reset.
1. Close the window fully.
2. Release the switch, then lift it to the close position and hold for 2 seconds.
3. Open the window fully.
4. Release the switch, then push it to the open position and hold for 2 seconds.
5. Lift and release the switch to operate the one-touch function.
6. Repeat the procedure on each window.
You should check your manual, as they could have revised the procedure.
1. Close the window fully.
2. Release the switch, then lift it to the close position and hold for 2 seconds.
3. Open the window fully.
4. Release the switch, then push it to the open position and hold for 2 seconds.
5. Lift and release the switch to operate the one-touch function.
6. Repeat the procedure on each window.
You should check your manual, as they could have revised the procedure.
The following users liked this post:
domino_z (10-27-2016)
#11
#12
Here are the instructions for MY16:
WINDOW RESET
The windows will need to be reset if the battery is disconnected, becomes discharged, or the power supply is interrupted. Once the power supply is restored, reset the windows as follows:
1. Close the window fully, and release the switch.
2. Lift the switch to the close position, and hold for 2 seconds.
3. Repeat this process a total of 5 times.
Test the window, to check that one-touch operation is working correctly. Repeat the process for the remaining window
The following users liked this post:
domino_z (10-27-2016)
#13
ok i got it working, my process was as follows (fyi my car was built late 2015)
- have car running
- close window (i hit the up a couple times to make sure it was fully closed)
- hold switch up fully depressed for 2 seconds
- lower window with soft depress (non-auto mode) all the way and release switch
- hold switch down fully depressed for 2 seconds
that did the trick
- have car running
- close window (i hit the up a couple times to make sure it was fully closed)
- hold switch up fully depressed for 2 seconds
- lower window with soft depress (non-auto mode) all the way and release switch
- hold switch down fully depressed for 2 seconds
that did the trick
#14
I have had the "low battery" problem since I picked up the car from he dealer. I am on a first name basis with "road service", no humor intended. If I leave the car for 2 days without starting it, I will find it totally dead. They have tried a number of things, all of the obvious stuff, but I am thinking that there is some kind of defect, particularly after seeing other people with the same issue on the '16 F Type R Coupe.
Anybody have this issue and the dealer fixed it how?
Anybody have this issue and the dealer fixed it how?
#15
#17
+1. This is my standard procedure after the car has been at the dealer or I've plugged into the OBD port myself. Disconnecting the ground (earth) lead from the battery for 10 seconds is more than enough, but you will probably need to reprogram your window "auto-up" feature (instructions in the owner's manual).
#20
The following users liked this post:
Craigr11 (11-17-2016)