Xenons4u is the leading high quality and affordable car parts provider in UK. We take pride to offer the best Mercedes-Benz A6510900248 Continental 5WK97817 MAF Mass Air Flow Sensor Meter. It is responsible for air flow intake and once it fails, you'll instantly notice bad gear shifting, idling issues, no power in acceleration as well. When MAF sensor fails you will get check engine light (CEL), once sign appears use OBD-II port scanner and check for fault code. If it is P0101 Mass or Air Flow Volume Sensor Circuit Range/Performance malfunction that just means meter needs to be replaced as soon as possible. To ensure about more details visit our website.