Mercedes owners when locking their vehicle experience the door locks jumping up and down.
This can cause issues when locking the vehicle and hamper the owners confidence in the vehicles security system. A poor quality steel material is used in the manufacture of the springs that hasn't been correctly protected to the elements. Over time minuscule amounts of corrosion on the spring eventually causes it to crack.
ML W163 97-05
Door not locking. Lock jumping up and down quickly.
There are no associated fault codes with this symptom.
I6automotive has manufactured a cost effective solution. A brand new spring that his treated against the natural elements found in the door cards. As always, we ensure our products are uprated and last the lifetime of the vehicle. Replace the spring and call it a day with your bouncing door locks!
X2 Right Spring
X2 Left Spring