This study investigates the impact of different vibration cue sequences on takeover behavior and subjective perception of drivers across various age groups during process of automated driving. The decline in reaction times, memory, and motor abilities in elderly drivers during takeover situations is well-documented. Vibration cues have been identified as promising reminders for takeovers, given their non-interfering nature with driving task and their ability to effectively occupy the perceptual channel. However, the positioning and order of vibration cues may influence drivers' takeover capabilities. To address this, twelve drivers, comprising six young drivers and six elderly drivers, participated in the study and viewed accident videos depicting different risk scenarios. Prior to the accidents, participants were given takeover prompts using various vibration cue sequences. Subjective questionnaires were then employed to compare the differences in takeover urgency and risk perception between the age groups in response to different vibration cue types. The results indicate that drivers demonstrate higher takeover willingness in low-risk scenarios (F=5.872, P=0.018) and require longer lead times to detect risks in high-risk scenarios. Furthermore, elderly drivers exhibit significantly lower trust in automated vehicles compared to young drivers (F=30.912, P<0.001) and have a lower level of risk awareness. For elderly drivers, the vibration cue sequence consisting of multiple consecutive points proves most effective in indicating the level of danger and takeover urgency. In contrast, for young drivers, both the continuous vibration cue sequence and the consecutive vibration cue sequence with multiple points are effective in indicating front-end danger, with the continuous vibration cue sequence performing best in prompting takeover urgency.