Mercedes E class side mirror dismantle blinker replacement. Spiegelblinker. Blinker im Spiegel 

My today's task is to replace driver side mirror blinker. I ordered part on ebay it costed approx 35 Eur part Nr. A2198200521
First you have to remove mirror there are 4 pins(nobs) see picture. Carefully must lift upper pins first and then slight push mirror down. When mirror removed you will need to remove (tx type) screws, see pic. When first screws removed take off mirror motor and you'll see more screws to remove. After that mirror cover is released, carefully slide cover and you'll see the last screw for blinker. Replace blinker with a new one and put all back together, don't forget to put all pieces and connect all wires .
Have questions ask.