I don't think the keyless entry issue will come into play here.
It is not the new type that has the infra red built into the door handle.
All keyless entries installed are of the typical after market type installation.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".