Mirrors playing up :(

[Cider Andy]

Disconnecting the battery certainly won't harm it. When you reconnect it the alarm will be armed (if it still has the factory alarm). Disarming it should put it back in sync.

Mirrors are controlled by an ECU under the dash that takes signals from the controller in the door. I'd check the connections behind the speaker in the door: it's possible they're damp and causing a spurious signal to be sent back to the ECU.

[spend]

Wear long sleeves and gloves to avoid fibre-rash

[spend]

Its all a bit of a pain to reach... The shielded cable you mention sounds like the window lift mechanical cable?

Basically 3 10mmaf nuts back from the speaker hole , screw behind the ashtray and a few screws in the carpeted area.. then the card flips out and lifts up from the window lip (you need to disconnect cables to lift it away).

There is also a relay behind the door inner skin on early cars, tried not to cloud my brain with later black box arrangements TBH

[Barkychoc]

I've had similar problems in the past with electric windows and mirrors playing up on a couple of cars (Non TVR).
In both cases it was broken wires where they leave the body and go into the door from the constant movement.

• Edited to add it may be worth trying to see if the symptoms alter with doors open or closed or partly open, you get the idea.

Edited by Barkychoc on Wednesday 10th December 19:27

[daz the plumber]

my divers side wing mirror packed up after a winter in the garage ,i dont`know why you need them to move , once set to correct position they don`t need to be re set .