Did I miss something somewhere? I put new pads on all 4 brake calipers. Made doubley sure that the sensor wire was connected to the pads. Now I have a "Brake Service" light with the Yellow triangle showing up on my dash. I read if the Pace pads were changed you had to disconnect and reconnect the battery. Is this also the same on the F-Type ?

 

I didn’t have to disconnect and reconnect the battery when I changed pads. However, disconnecting/reconnecting is pretty simple so it wouldn’t hurt to try

 

No disconnect and reconnect of battery needed. It's just a simple circuit with 2 wires. Closed loop is ok. Open loop (when the wear sensor is worn out and breaks the circuit) is error message

So - a few possibilities. The sensor isn't properly plugged into its connector. You reused the old sensor (which can go brittle) and it broke. Or not attached properly and it fell off and got ripped by the wheel

Look at front left and rear right wheels (think that's where the sensors are). Can you see a wire hanging down, broken sensor etc?
If not, pop off the wheel to check

 

Did you change pads because the light came on? If so, you'll need to replace the sensor. It's not something that can be reset. If it wasn't on before, check as BritCars suggests. I was thinking that there were sensors on all wheels, but it's been a few years and I could just be misremembering. I'd seen warnings that they get fragile with age, so took extra care with them.

 

Yep, only two brake pad wear sensors on any/all F-Types, left front and right rear, inner pad on both.
Many reports on the Pommy forum across a wide range of Jags that the sensors, where they plug into the calipers, are extremely brittle and break if you sneeze within 10 miles of them. Once they break they are completely useless. Also many reports that quite often new sensors don't work the first time they are fitted due to a red plastic plug inside the terminal connection/plug (up in the wheel well) and the "fix" is to remove that plug.
Removing the sensors completely does not turn off the "brake pads low" or "brake service required" message on the dash, the sensors work (trigger) by the cable wearing through once the pads reach a certain thinness and creating an open circuit and removing the sensors altogether also creates an open circuit, hey presto annoying message on the dash. So you need to keep the electrical connection (plug end) of the sensors plugged in up in the wheel well to prevent the warning message.
Last but not least many Jag owners, myself included, have disabled the warning system in one of two ways:
Method one (the one I have used three times now) - simply unplug the caliper end of the sensor from the caliper and zip tie it up out of the way. Quick easy and effective but obviously only works for a sensor which has not triggered.
Method two - cut the caliper plug end off the sensor up near the electrical plug (which remains plugged in) and join the two wires together - apparently soldering doesn't work they need to be crimped and heat shrink wrapped.

 

Got it figured out. Ended up being the Electronic Parking Brake Maintainence Mode. I thought that I had it reset after the pad changing but apparently it didn't take. Did it once again, and it took hold this time.

 

Can you please share the procedure for placing the car in maintenance mode and then taking it out of maintenance mode? It's only required for the rear brakes?

 

To put the car in brake maintenance mode: Ignition on, push the hand brake button down and hold for 2 secs, press accelerator to the floor and hold 2 secs turn ignition off/on and release accelerator and hand brake button. Dash should now read Brake Maintenance Mode. This retracts the EPS motors to allow you to push the piston back in. No tools needed.

To the car out of brake maintenance mode: Ignition on, pull the hand brake button up and hold for 2 secs, press accelerator to the floor and hold 2 secs turn ignition off/on and release accelerator and hand brake button. Dash should now clear Brake Maintenance Mode.

 

To add to what uncheel has posted yes it is needed only when working on the rear brakes and no need to do this if working only on the front brakes.
In most situations when working only on the front brakes you want the EPB on.