I have a 1989 560SEL and I need to change the O2 sensor but I can't get to the connector from under the car and the seat and carpet and console have it sandwiched on the inside. Do I have to take out the console to get to it or can I just pull it through the rubber gromet or do I have to take out the seat?I'm hopeing that someone has done this before and there is a simple solution.

On the E-Class cars the electrical connection for the Oxygen sensor is under the front passenger's side fitted floor mat. Typically the floor mat has 1 snap below the front edge of the seat that secures it. Lift to unsnap the floor mat and remove it from the car. Disconnect the electrical connection, then remove the grommet and push the wire through the hole in the floor. Unscrew the Oxygen sensor from the exhaust pipe. Installation is the reverse sequence.

__________________
Fred Hoelzle

Remove the passenger seat floor mat.

Remove the plastic foot rest looking thing at the head of the passenger foot well.

Your oxygen sensor wires are under there.

You might need to remove the center console side carpeting to gain full access to the wiring.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k