I recently took my late 2014 to the Apple store because the trackpad had stopped clicking. they said that the battery was swollen and pressing on the trackpad causing it to not click. They have to replace the whole battery+keyboard+trackpad+casetop unit. It would be $500 but since it was caused by a swollen battery (and they are nervous about that) they decided to do the replacement and didn’t charge anything. What a relief!

I took my late 2014 to the apple store recently because the trackpad stopped clicking. it turned out to be a swollen battery pressing on the trackpad. They said that the battery was one unit with the keyboard and trackpad and that they would have to replace the entire unit. it would be about $500 but because it was caused by the swollen battery, they didn’t change anything. What a relief!