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)
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!

C300CA

I really doubt changing rim and tire will affect CC operation.

Adi-Benz

Changing wheels does not affect cruise

CaliBenzDriver

When you're ready to fix your cruise-Ctl either let the shop do it or buy a OBD scanner to read faults.

TruongNguyen

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

TruongNguyen

Well, so what things can affect CC? brake pedal switch? or ECU have some problem?

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.

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

CaliBenzDriver

To get Cruise Ctl:
1- Fix ECU fault
2- CC good?
3- buy iCarsoft

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?

Adi-Benz

That other code might block your CC. Make sure to get that fixed and then check after.

CaliBenzDriver

Yes MB shop can repair ECU fuel fault and check functions of CC

TruongNguyen

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...