Yep, listen to onnzo. Bags likely cause. My r350 has been on the ground twice in 9 years. Each time: bags. Easy to replace. Arnott has them. Mine were A2597 arnott rear air bag (either side). Yours may be different but arnottindustries.com has info. I then bought mine on Amazon. The dealer tells you to replace them in pairs. I replace mine as they go bad.
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