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Old Jul 22, 2018 | 01:50 PM
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Race start

hey guys...I’ve read through numerous posts about race start but I can’t find my answer.

I have 1200 miles on my 17 c63 coupe.

I cant seem to get race mode to engage. I wait till engine temp is hot enough depress gas hold both paddles and then press the right paddle. Once I press the gas and hold down the brake and try and go it’s like it skips and deactivated it automatically. Can someone help me out?
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Old Jul 22, 2018 | 02:07 PM
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Press brake with left foot and keep pressing when also pressing gas pedal with right. It’ll rev up and then you release the brake to go.
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Old Jul 22, 2018 | 03:01 PM
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Originally Posted by lovepower1
Press brake with left foot and keep pressing when also pressing gas pedal with right. It’ll rev up and then you release the brake to go.
sometimes the devil is in the details:
Engine and trans oil temp in the white/seat belt on and doors closed and steering straight ahead/switch to race mode and set to manual shifting but don't shift as it will shift for you/
left foot hard on brake/pull both paddles(screen ahead of driver will ask you to pull right to confirm)/pull right to confirm(screen will ask to floor the gas)/right foot full down on gas/rpm will go to about 3500/foot off brake and hold on

Last edited by RDOCA; Jul 22, 2018 at 03:26 PM.
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Old Jul 22, 2018 | 03:01 PM
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I’ve been doing that. Also I’ve seen other cars actually show race mode on the lever you can choose from to switch between the other modes
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Old Jul 22, 2018 | 03:03 PM
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Originally Posted by kings4thecup
I’ve been doing that. Also I’ve seen other cars actually show race mode on the lever you can choose from to switch between the other modes
Is yours a C63S?
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Old Jul 22, 2018 | 03:04 PM
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Originally Posted by kings4thecup
I’ve been doing that. Also I’ve seen other cars actually show race mode on the lever you can choose from to switch between the other modes
when you pull both paddles do you get the message to pull right to confirm?
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Old Jul 22, 2018 | 03:07 PM
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Mine is just a c63. I didn’t feel the money was worth the difference bc when I get a tune it’ll have the same output. Does the c63s only have that mode for race on the switch?

also I am pressing the right paddle to confirm.
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Old Jul 22, 2018 | 03:07 PM
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It actually has a lag as if esp isn’t off
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Old Jul 22, 2018 | 03:10 PM
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Originally Posted by kings4thecup
Mine is just a c63. I didn’t feel the money was worth the difference bc when I get a tune it’ll have the same output. Does the c63s only have that mode for race on the switch?

also I am pressing the right paddle to confirm.
I don't think the non S has race start???
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Old Jul 22, 2018 | 03:11 PM
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Originally Posted by kings4thecup
Mine is just a c63. I didn’t feel the money was worth the difference bc when I get a tune it’ll have the same output. Does the c63s only have that mode for race on the switch?

also I am pressing the right paddle to confirm.
but does it ask you to confirm by pulling right paddle and then ask you to floor gas?
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Old Jul 22, 2018 | 03:41 PM
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Yes. It asks me to press the right paddle to confirm then floor the gas and it goes to 4K rpm and then when I take off the brake to have it go it lags really bad and esp shows up
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Old Jul 22, 2018 | 04:02 PM
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Originally Posted by kings4thecup
Yes. It asks me to press the right paddle to confirm then floor the gas and it goes to 4K rpm and then when I take off the brake to have it go it lags really bad and esp shows up
the base C63 does not have racestart

Last edited by Luis Tellechea; Jul 23, 2018 at 08:19 AM.
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Old Jul 22, 2018 | 09:08 PM
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I dont remember if its called race start or not but the non s does have launch control. I have used it a handful of times. if you release the brake too early it will disengage. You must also have the car AND suspension in sport plus mode I believe.
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Old Jul 22, 2018 | 09:28 PM
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I have a Non S...it DOES have race start
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Old Jul 23, 2018 | 12:19 AM
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Originally Posted by Pete H
I have a Non S...it DOES have race start

how do do you exactly do it? I can’t seem to get the damn thing to work properly.
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Old Jul 23, 2018 | 12:21 AM
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Also what are the stock tire sizes on the coupes? I got mine brand new and it came with Michelin PSS and in the front they’re 255/35/19 in front and 295/30/19 for rears. Seems like most of them come with 265/275 in the rear?
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Old Jul 23, 2018 | 08:22 AM
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Originally Posted by Pete H
I have a Non S...it DOES have race start
I have a 2017 sedan base and it does not have it. it may be have been added to the coupe or later model
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Old Jul 23, 2018 | 09:15 AM
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I have an 18 vert.... after reading this thread I went out and tried it. It works exactly as described, pull both paddles, confirm with an upshift while holding brake and stepping on gas and release brake. The menu between the gauges gives instructions. Didn't launch the greatest ...but it works. If you wait too long it deactivates after 5 seconds.

Last edited by Pete H; Jul 23, 2018 at 09:21 AM.
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Old Jul 23, 2018 | 09:26 AM
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Originally Posted by kings4thecup
Also what are the stock tire sizes on the coupes? I got mine brand new and it came with Michelin PSS and in the front they’re 255/35/19 in front and 295/30/19 for rears. Seems like most of them come with 265/275 in the rear?
I have the base 18 inch wheels with 245 pss ...and 285 pss on rears.....295 rear are not factory sizes for any of the original wheels available in either sedan or coupe
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Old Jul 23, 2018 | 12:57 PM
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The non-S has Race Start, I've used it in my car a few times.

To bring it up I just put the car in S+, hold my foot on the brake, and pull back both paddles at once. I get the message that Race Start is active and then floor the gas and release the brake pedal to launch.

Honestly though it's pretty hit or miss in terms of being better than just launching it yourself.

I've tried it with traction control in Sport mode and disabled entirely.

I was at a car show over the weekend and it turned into a bit of a launch control show at the end. I left my TC in sports mode so I wouldn't end up being that guy on YouTube crashing his car on video.

Last edited by Fame Douglas; Jul 23, 2018 at 01:01 PM.
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Old Jul 23, 2018 | 01:34 PM
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Originally Posted by Pete H
I have the base 18 inch wheels with 245 pss ...and 285 pss on rears.....295 rear are not factory sizes for any of the original wheels available in either sedan or coupe

oops i meant 285...I want 295's for them lol.

Will those fit on the stock rim?
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Old Jul 23, 2018 | 02:49 PM
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My wheels are 18x10.5.. they fit no problem
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Old Jul 28, 2018 | 11:32 AM
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Is it possible that the use of race start is restricted until after the prescribed break-in period? The axle oil service is at 1,850 miles, so maybe it doesn't let you activate it until after you've hit that mileage.
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Old Jul 28, 2018 | 03:34 PM
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it is restricted but i believe its until you hit 1000 miles. I dont remember how many miles i had before my first crack at it though.
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