OBD Monitors Not Ready - Drive Cycle?
Thread Starter
Super Member
Joined: Jun 2015
Posts: 643
Likes: 92
From: Houston, TX
'15 C63S
OBD Monitors Not Ready - Drive Cycle?
I recently had a MIL that has since been cleared, and as is the case erasing the code also reset all the OBD Monitors. I have had no codes since then. Went in to get my state (TX) inspection done, and my car failed the OBD test because 2 of the monitors were Not Ready (Catalyst and Evap). Car is stock, so the typical headaches that come with a tune do not apply. Also, I'm assuming I'd be seeing additional codes thrown if there was something wrong with the car.
Anyone know of the specific drive cycle for the W205 that will change these Monitors to Ready? I've tried a couple I've found, but none seem to work. My registration is up today, so I don't have the luxury of waiting a few weeks for them to randomly reset.
Anyone know of the specific drive cycle for the W205 that will change these Monitors to Ready? I've tried a couple I've found, but none seem to work. My registration is up today, so I don't have the luxury of waiting a few weeks for them to randomly reset.
Super Member
Joined: May 2016
Posts: 669
Likes: 82
From: Houston
19 E63s
Are you sure it's stock, buy it used? Good news is judging by how many people's registration is out of date, you should be fine, and I doubt you'd get a ticket if you told the officer your situation.
Thread Starter
Super Member
Joined: Jun 2015
Posts: 643
Likes: 92
From: Houston, TX
'15 C63S
From most of the things I've read, it says the driving cycle needs to begin when the engine temp is within 10 degrees F of the ambient/intake temperature. I'm thinking my issue is that I park my car in my (hot as hell) garage and that the clengine doesn't cool off enough in the morning to initiate the cycle. Parking it outside tonight to see if it makes a difference.
