How to disconnect and reconnect the battery/reset the battery module
#1
How to disconnect and reconnect the battery/reset the battery module
I appear to have the same issue as many (e.g, forum threads "battery drained due to OBD port", "Dead Battery ::FURIOUS::", etc.) who have returned from a vehicle service and found the Low Battery warning the next day on their dash board (and observed the door lock LEDs and hazard light remaining on for hours after parking and locking their car). The solution appears to be resetting the battery module by disconnecting and reconnecting the battery.
The trouble is: how exactly do I go about disconnecting and reconnecting the battery?
After removing the trunk liner and opening the power connector box, here's what I see in my F-Type 2017:
F-Type 2017 with trunk liner removed and connector box opened, seen from top
The trouble is: how exactly do I go about disconnecting and reconnecting the battery?
After removing the trunk liner and opening the power connector box, here's what I see in my F-Type 2017:
F-Type 2017 with trunk liner removed and connector box opened, seen from top
#2
Join Date: Feb 2014
Location: Adelaide, South Australia
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See the short thick black cable bolted to the floor, LHS and just below middle of the pic?
That's the battery earth lead.
All you need to do is disconnect that lead for a while (and make sure the end stays away from any metal area).
From memory it's a 14 mm nut to undo, 2 minute job tops.
That's the battery earth lead.
All you need to do is disconnect that lead for a while (and make sure the end stays away from any metal area).
From memory it's a 14 mm nut to undo, 2 minute job tops.
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#3
#4
Correction: the hazard light turns off, too, it just takes a little longer.
As mentioned, date on dash was reset, windows needed to be reset (wouldn't go up all the way after letting go off window button; reset is done by lowering and raising each window 5 times (documented in owner's manual)); Bluetooth devices were retained.
As mentioned, date on dash was reset, windows needed to be reset (wouldn't go up all the way after letting go off window button; reset is done by lowering and raising each window 5 times (documented in owner's manual)); Bluetooth devices were retained.
#6
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#7
Positive vs negative??
Is there a reason you recommend disconnecting the positive over the negative?? I would think the sparking would not occur if the negative cable was removed.
See the short thick black cable bolted to the floor, LHS and just below middle of the pic?
That's the battery earth lead.
All you need to do is disconnect that lead for a while (and make sure the end stays away from any metal area).
From memory it's a 14 mm nut to undo, 2 minute job tops.
That's the battery earth lead.
All you need to do is disconnect that lead for a while (and make sure the end stays away from any metal area).
From memory it's a 14 mm nut to undo, 2 minute job tops.
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#8
Join Date: Feb 2014
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And you are correct, little or no sparking disconnecting and/or reconnecting that lead but potentially lots of sparking from disconnecting and/or reconnecting the positive battery lead.
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