If one or both F430 side mirrors is loose, this is an easy way to get it long term fixed. Itís a 15 minute job which can be done by anyone.
If your mirror is wiggling like in this small video, itís time to get it fixed as it will get worst up to the point that at high speed and with the air flow, your mirror will turn towards the window...
The mirror can get loose in two different areas. The 3 screws of the underside can be loose but also the 2 screws inside the mirror holding the coupler.
Step 1 : Make sure to protect the door to avoid any screw driver scratches on the paint! I used a flexible screw driver to have a better angle and to not touch the door while unscrewing them. Remove the 3 screws under the mirror.
Step 2 : Remove the 2 small screws holding the coupler.
Step 3 : To avoid these screws to loosen again (which will obviously happen again), add some red nail varnish on these 2 screws before screwing them back. This will gently lock the screws but they will still remain removable with some simple dissolvent. I would avoid using Loctite or equivalent on these very small screws as it would lock them permanently and it would be really hard to remove them without damaging the screw heads. To avoid any issues with the wifey, I bought my own nail varnish (the cheapest)
Step 4 : Apply some good quality grease on the coupler as well as on the upper pivot.
Step 5 : Apply a bit red nail varnish on the 3 external screws and screw them back.
I actually did this myself, with the help of my son - which is to say ANYONE can do it. I believe the (3) underside screws are torx - t15. I found getting to them safely, without scratching the paint, was fairly challenging but I have limited tools - and skill - at my disposal. My inner screws are very small Phillips head and they were very loose.