A squeak from the steering column is often related to a rubber boot in the column or a seal in the power steering rack.
Car Problem Reports
Mercedes-Benz E320 Squeak in Steering Column Due to Rubber Boot or Seal
Mercedes-Benz E320 Problem
Average Mileage: 89,096 mi (22,253 mi - 170,000 mi)
Visitor, 2001 Mercedes-Benz E320, 60,000 mi
Squeaking steering wheel.
Visitor, 2000 Mercedes-Benz E320
Squeaking sound and feel when turning the wheel. Wasn't fixed. Told the whole steering column would have to be removed.
Visitor, 2001 Mercedes-Benz E320, 121,000 mi
dry squeak sound when steering wheel is turned
Visitor, 1997 Mercedes-Benz E320, 22,253 mi
Sweaky starring colume. Blower motor don't work and shift lever is loose
Visitor, 2000 Mercedes-Benz E320, 170,000 mi
Steering wheel squeaks when making turns, super obnoxious.
Visitor, 1997 Mercedes-Benz E320, 80,000 mi
Constant squeak, more like plastic rubbing together and not metal. It is coming from the steering column and does not matter if you turn the wheel or not...constant squeak.
Visitor, 2001 Mercedes-Benz E320, 89,000 mi
The MB dealer just oil the bushing and It still has sounds when turns.
squeaking sound when turning steering wheel
Visitor, 2001 Mercedes-Benz E320, 100,000 mi
squeking noise when i turn stearing wheel. very annoying
it was fixed by dealer under the waranty. THe problem cam back with 80000 mile.