Drive Cycle detail to pass SMOG Test
Thread Starter
Newbie
Joined: Jul 2022
Posts: 7
Likes: 4
From: California
2015 G-550
Drive Cycle detail to pass SMOG Test
Hi folks,
I recently bought my dream car -- a 2015 G-550 from out-of-state. I need to pass the smog test issued by California DMV, and it failed the test twice now despite driving "the way it supposed to be". I want to know if anyone knows the specific way to complete a drive cycle so that I can pass the smog test. I don't know if driving 200 miles is actually necessary or not, but I would like to avoid that at the moment since the out-of-state temproary license is expiring soon. Thank you in advance.
I recently bought my dream car -- a 2015 G-550 from out-of-state. I need to pass the smog test issued by California DMV, and it failed the test twice now despite driving "the way it supposed to be". I want to know if anyone knows the specific way to complete a drive cycle so that I can pass the smog test. I don't know if driving 200 miles is actually necessary or not, but I would like to avoid that at the moment since the out-of-state temproary license is expiring soon. Thank you in advance.
Thread Starter
Newbie
Joined: Jul 2022
Posts: 7
Likes: 4
From: California
2015 G-550
That's a solution that I did not know existed! Do you remember how long did it take and/or what was the process (i.e. they drove the car around / run the car on a dyno)?
Senior Member
Joined: Dec 2002
Posts: 322
Likes: 75
From: USA
G63
I have followed this in the past and it generally works. On my G after clearing the ECU, usually driving it normally starting with a full tank of gas gets all of the monitors ready in about 2 days. That usually covers about 60 or so miles of driving.
https://www.smogtips.com/smog-questi...cle%20complete.
https://www.smogtips.com/smog-questi...cle%20complete.
Thread Starter
Newbie
Joined: Jul 2022
Posts: 7
Likes: 4
From: California
2015 G-550
I have followed this in the past and it generally works. On my G after clearing the ECU, usually driving it normally starting with a full tank of gas gets all of the monitors ready in about 2 days. That usually covers about 60 or so miles of driving.
https://www.smogtips.com/smog-questi...cle%20complete.
https://www.smogtips.com/smog-questi...cle%20complete.
1. Saturday: drove 4.6 miles (local, with moderate lights and stop signs, tried to drive around 35 mph or whatever the legal limit is) to Costco and replace all tyres (Engine off).
2. Saturday: from Costco, drove 11 miles (freeway, 65 mph +/- 10 mph depending on sections), get off the freeway and drove another ~5.7 miles (local with some lights and few stop signs). Stop (engine still on) and check for smog test -- not ready/2nd failed. Drove back to parking garage (4 blocks) and done for the day.
3. Sunday: Drove 7.9 miles (~4.5 miles on freeway, ~3.2 miles local -- uphill, with lots of stop signs) to local dealership. (Engine off for ~5 mins).
4. Sunday: drove 4.5 miles (freeway) back to Costco for tyre pressure / lug tightness check. Engine off for ~5-10 mins.
5. Sunday: drove 4.6 miles (freeway) back to home to get paperwork for smog test (engine off for ~5 mins). Back to the smog test station that was a block away. Performed OBDII diagnostics while engine stays on, and then the actual test -- pass! (To my surprise!)
Hope it may help for any folks in the future l!
