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You can pull cluster and inspect internal ribbon cables/connections & circuit boards for possible cleaning and/or solder repair. All visually fine, consider replacing with used cluster. To transfer current data and mileage you will need to swap center board as shown. Unfortunately, if it the current center board is faulty you will need Xentry to transfer data to replacement cluster used or new. Need VIN if you want compatible cluster part #s to shop.
I had a cluster go completely dead when it was out in the dead of winter , record breaking cold. It ended up coming back to life within a few days. It got down to -40*F
In the meantime I also read up on replacement and actually already had a replacement cluster ready luckily did not have to use it. they can be found second hand on ebay for cheap.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
