We have a 2011 GL450, less than one year old, less than 4k miles. Bought new. The EIS has failed on this vehicle now 2x. Today, they are putting the 3rd EIS into our GL450 since we have owned it. Has anyone else had a similar problem? I have placed a call into Mercedes USA to figure out why this is happening, but would like to know if this is an anomaly or is there a pattern with others. The fact that this is happening so frequently within the first year of the car concerns us greatly. Is the car causing the EIS to fail? We have 4 small children, and I am becoming increasingly frustrated with this situation given that we have been placed in multiple situations now where we have had to rely on roadside emergency service. Any feedback is greatly appreciated.