2011 Mercedes R-Class Owner's Manual - Page 81
2011 Mercedes R-Class Manual
Page 81 highlights
SmartKey Problems with the SmartKey Problem You cannot lock/ unlock the vehicle using the SmartKey. Possible causes/consequences and M Solutions The SmartKey battery is discharged or nearly discharged. X Point the tip of the SmartKey at the driver's door handle from a distance of approximately 1.5 ft (50 cm) and try to unlock or lock the vehicle again. If this does not work: X Unlock the vehicle using the mechanical key (Y page 77). X Check the key battery and replace it if necessary (Y page 78). The SmartKey is faulty. X Lock the vehicle as described in the "Locking the vehicle (mechanical key)" section (Y page 82) or unlock it using the mechanical key (Y page 77). X Have the SmartKey checked at a qualified specialist workshop. You can no longer KEYLESS-GO is in standby mode because the vehicle has not been lock/unlock the unlocked for an extended period. vehicle using KEYLESS- X Pull the door handle twice and then insert the SmartKey into the GO. ignition lock. There is a malfunction with KEYLESS-GO. X Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the %/& button. X Have the SmartKey checked at a qualified specialist workshop. There is interference from a powerful source of radio waves. X Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the %/& button. You have lost a SmartKey. X 79 Have the SmartKey canceled at an authorized Mercedes-Benz Center. X Report the loss immediately to the vehicle insurers. X If necessary, have the locks changed as well. X X You have lost the mechanical key. Report the loss immediately to the vehicle insurers. If necessary, have the locks changed as well. Z Opening and closing