The little rubber boot before it connects to the caliper is a bit disintegrated and the rest of the cable I can see looks intact.

Even better - these are very clever.

https://www.ebay.co.uk/itm/226053232446?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&customid=Cj0KCQjw6auyBhDzARIsALIo6v9KwyrYARy9R_PVwqc8ngQg_eCFW2zdVJSjc-f8fUqNHitTV7eYal4aAnQ9EALw_wcB

Quote from: Dagnet on Today at 10:29I have high parasitic current on my car too. I have to disconnect the battery if I don't drive the car for a few days. Will check this out

Whilst you are investigating(or even afterwards), would a battery isolator switch be useful?

eg

https://www.google.com/search?q=battery+isolator+switch&rlz=1CAZJXP_enGB1104&oq=battery+isolator&aqs=chrome.0.0i433i512j69i57j0i512l8.19261162j0j15&sourceid=chrome&ie=UTF-8

Quote from: Dagnet on Today at 13:18The cable seems to travel alright but there is a sort of grinding feeling. Hopefully lube will improve it. Do you lube from caliper side or from inside the car?

Cable rubber intact?

Inside, as the high point.
Shallow but gravity is your friend here.

Quote from: Alex Knight on Today at 11:20https://www.forgemotorsport.co.uk/Garrett_Turbocharger_Actuator_480009--product--1762.html?gad_source=1&gclid=Cj0KCQjw6auyBhDzARIsALIo6v83-FU3yRnYQUwN_Xkp2h-hVARct3xHUP5Ecboq3FT45vLSmDth5qIaApxlEALw_wcB

Excellent thank you Alex - that's the right shape, I just one that is a bit longer now.. the design of the TBO requires the arm to be about 3cm longer (need to measure exactly still).

The cable seems to travel alright but there is a sort of grinding feeling. Hopefully lube will improve it. Do you lube from caliper side or from inside the car?

Quote from: Alex Knight on Today at 07:50Sorry. I've just realised that the second pic is from your Celica! D'oh!

Yeah, top image is the MR2, below is the severely whipped Manky Celica! The 2zz is the worst sludgy engine I've ever seen by quite some stretch!

The cables have a ptfe or similar liner & are not designed to be lubed, but a thin oil works. Undo the support forward of the caliper to get the cable-end down low to encourage flow.  Start with a wd40-type with a straw. Then 3in1 oil or similar. First time I did it was 2019, the cable needed gripped with pliers to move. I've lubed it again since, and it still works.