41 00... Straightening Aluminium Component On The Outer Skin

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

1.0 Recommended tools

Only use tools specifically designed for aluminium repairs.
Do not use tools and operating fluids that have already been used for steel repairs (e.g. grinding wheel). Danger of contact corrosion.
Do not use any sharp-edged tools (notch effect).
Sourcing reference BMW Workshop Equipment Catalogue.

2.0 Straightening outer skin

"Cold" straightening: Press dents out from their center and smooth in an outwards direction with gentle taps.
In the case of small, soft dents (hail and parking damage), this is also possible without damaging the paintwork. Special tools and a trained employee are needed.
"Hot" straightening: Heat the component in the damaged area with a hot air blower to approx. 60 °C. This significantly reduces the force that needs to be applied for straightening.
Avoid notching and cracking.
Avoid hardening and overstretching.
Avoid heating and excess temperature the outer skin over large areas.