Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
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I do not think there is anything you accidentally pushed. It is possible that the batteries may be weak in both remotes although that is unlikely. There is a seperate module that controls the keyless entry and start which may need to be replaced. It also can be the receiver for the system. Either will be covered under warrantyo you will need to visit your local Jag dealer.
Sometimes disconnecting the vehicle battery can reset the system but I would rather see it repaired as the reset is usually only temporary. Let me know.