BMW E46 M3 E39 M5 Oval Interior Rear View Mirror Auto Dim Dimming Replacement Glass Cell

Please note we no longer sell this product. This video is kept online for information purposes.
The OEM mirror cell contains a corrosive fluid, extreme care should be taken when removing the OEM cell, also fluid might have leaked within the housing. Take extreme care; wear appropriate PPE including gloves and goggles to avoid injury.
Symptoms of fault
Poor visibility through the rear view mirror, bubble in the centre of the mirror, auto dimming function has stopped working, liquid appearing behind mirror glass, a wave / fluid visible in the glass, mirror permanently dimmed, interior trim damaged / melted beneath the rear view mirror typically around the gear lever trim. These are all common symptoms of a failed rear view mirror glass cell.
The cause
The glass cell within the rear view mirror fails, leading to a distorted view, a bubble in the centre of the mirror or the cell can even leak damaging the interior of the vehicle.
The OEM Magna Donnelly glass mirror cells fitted within the rear view mirror housing of the BMW E46 M3 and E39 M5 commonly fail; leading to the glass distorting or bubbling. These OEM mirror cells feature a sandwich design with a fluid in the middle which enacts the dimming function. Around the outside edge is a seal keeping the fluid contained. Over time this seal breaks down and the highly corrosive fluid escapes the housing which can damage the interior trim /leather within the vehicle. This is a common fault which has affected 1,000’s of M vehicles worldwide.
The solution
Install our replacement glass cell and restore function for the lifetime of the vehicle
Our brand new improved design glass cell can be installed simply following our instructions and video, replacing the original faulty cell. No need to send your mirror away, you can carry out this repair at home. Save the cost (£350+) of a complete new rear view mirror which would contain the OEM glass cell (as do second hand units) and would only fail again. Using our improved design glass cell you can replace just the rear view mirror component that fails.
Our glass cell is manufactured to far higher standards than the OEM part and is designed to never leak. Our cell allows you to retain the same auto dimming function; our replacement operates, dims, and fits in exactly the same way as the OEM part. It has even been commented that the dimming function works better than the OE part; dimming / undimming faster.
If your rear view mirror has not yet failed or is showing symptoms of deterioration; installing this cell is a good preventative measure, it seems all OE mirror cells fail sooner or later and if not caught early enough can damaged interior trim.
Vehicles affected
BMW E46 M3 2000-2006
BMW E39 M5 1998-2003
Associated part numbers: 51167892261, 51167892264, 51167892263, Vehicles with auto-dim oval rear view mirror.
Available from X8R Ltd