Bump? I tried to pull the sensor off on a cold morning and I pulled and pulled and pinched what I thought was a clip but I felt so sure I was going to snap something I gave up.
This is a new page but please view the video. It was actually closer to zero that morning and the light was on for less than a second.
pull the electrical plug off the temp sensor. It's your standard mk4 electrical plug..
Yup... standard MK4 connector... completely different lock than MK3 or Mk2 or MK1.
Stick a screwdriver at right angles to the slot at the end of the connector and then twist the screwdriver 45 degrees while pulling out on the body of the connector.
The CTS sensor is in an awkward spot so in the past I've practiced on a another connector under the hood that's in plain view and easily accessible to remind myself how they work. I also usually remove the big corrugated air-hose between the airfilter and intake manifold so that I can see what the hell I'm doing as I mess with the CTS.
Push in before you pull out.
works every time.
maybe you have a weak starter, draining your battery on start up, mixed with sensor... my 2 cents.. maybe 1 cent