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[HELP] Cruise control doesn't work

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Old Aug 25, 2022 | 05:38 AM
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C250 W204
Exclamation [HELP] Cruise control doesn't work
Hello guys!
I'm new here and I just bought my first Mercedes sedan C250 W204 2009 in a few weeks.

A few days ago I recognized my CC doesn't work, You guys can watch my recorded video when I'm driving and try to set CC. (Note: I was tried to set CC at speed of more than 60km/h already)
Anh LIM too, when I set maximum speed is 30km/h and then when I drive reached over 30km/h I heard a sound like "beep" and LIM speed set on dashboard disappear.

I have heard people talking around CC and LIM will not work if tires and rims change. So yes when I buy my car seller changed the rims and tires already. At present, my card uses 18" rims and tires: Front: 225/40/18 Rear: 255/35/18
Just wanna know if rims and tires change can make CC/LIM doesn't work because I don't have original rims and tires to check it right now.

Thanks for your help and best regards!
Truong!
Last edited by TruongNguyen; Aug 25, 2022 at 05:40 AM.
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Old Aug 25, 2022 | 10:47 AM
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I really doubt changing rim and tire will affect CC operation.
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Old Aug 25, 2022 | 11:41 AM
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Changing wheels does not affect cruise
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Old Aug 25, 2022 | 03:04 PM
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Originally Posted by TruongNguyen
Hello guys!
I'm new here and I just bought my first Mercedes sedan C250 W204 2009 in a few weeks.

A few days ago I recognized my CC doesn't work, You guys can watch my recorded video when I'm driving and try to set CC.
(Note: I was tried to set CC at speed of more than 60km/h already)

Thanks for your help and best regards!
Truong!
When you're ready to fix your cruise-Ctl either let the shop do it or buy a OBD scanner to read faults.
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Old Aug 25, 2022 | 10:09 PM
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C250 W204
Originally Posted by CaliBenzDriver
When you're ready to fix your cruise-Ctl either let the shop do it or buy a OBD scanner to read faults.
Oh i was bought a OBD2 ELM327 wife scan tool app on cellphone and did few scan and read faults code just have an issue only. its P2540(09) code, its said Fuel low pressure sensor - range/performance problem
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Old Aug 25, 2022 | 10:11 PM
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C250 W204
Originally Posted by Adi-Benz
Changing wheels does not affect cruise
Well, so what things can affect CC? brake pedal switch? or ECU have some problem?
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Old Aug 25, 2022 | 11:15 PM
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Originally Posted by TruongNguyen
Well, so what things can affect CC? brake pedal switch? or ECU have some problem?
you already got an ECU code to fix about your fuel pressure.
It's a great idea to confirm the issue using scanner data before jumping to conclusion with parts.

FYI: ELM327 may not be suitable for much here unless you're really bent on using it.
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Old Aug 25, 2022 | 11:32 PM
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C250 W204
Originally Posted by CaliBenzDriver
you already got an ECU code to fix about your fuel pressure.
It's a great idea to confirm the issue using scanner data before jumping to conclusion with parts.

FYI: ELM327 may not be suitable for much here unless you're really bent on using it.
Yeah I see, I just bought ELM237 to make a quick scan about my c250 coz I just bought my car around a month and I want to know if there's any problem with my car via OBD2 scanner xD
So, from now I still don't understand or figure out why I can't set my CC
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Old Aug 26, 2022 | 02:45 AM
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Originally Posted by TruongNguyen
Yeah I see, I just bought ELM237 to make a quick scan about my c250 coz I just bought my car around a month and I want to know if there's any problem with my car via OBD2 scanner xD
So, from now I still don't understand or figure out why I can't set my CC
To get Cruise Ctl:
1- Fix ECU fault
2- CC good?
3- buy iCarsoft
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Old Aug 26, 2022 | 04:17 AM
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C250 W204
Originally Posted by CaliBenzDriver
To get Cruise Ctl:
1- Fix ECU fault
2- CC good?
3- buy iCarsoft
well, i think to fix ECU faults need goto Mercedes official service. Let them check about my ECU have something wrong or not right?
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Old Aug 26, 2022 | 12:06 PM
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That other code might block your CC. Make sure to get that fixed and then check after.
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Old Aug 26, 2022 | 01:46 PM
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Originally Posted by TruongNguyen
well, i think to fix ECU faults need goto Mercedes official service.
Let them check about my ECU have something wrong or not right?
Yes MB shop can repair ECU fuel fault and check functions of CC
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Old Nov 27, 2022 | 09:25 PM
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C250 W204
Originally Posted by CaliBenzDriver
Yes MB shop can repair ECU fuel fault and check functions of CC
Well, after long time check, MB shop didn't found any fault code that related to CC... now i don't know whats going on here...
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