need help Please !!!!!!!!
Thread Starter
Newbie
Joined: Nov 2015
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01 s500
need help Please !!!!!!!!
need help please asap I have a 01 s500 19 inch stagger rims I had a flat on the back so I tire shop guy told me to put 245r45/19 on the back so in did after I left the check engine light came on the codes are po720 and po500 .....what I need too do plz help I send alot of money in this car not trying to come out my pocket if it wasn't my fault
Senior Member
Joined: Mar 2012
Posts: 337
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JBs C63 PP( wifes car ), Mc Laren Pxx(toy), 2013 Mustang GT 5.0 ( DD ), ML 6.3 ( winter DD )...
Understand that an CEL is nothing but an light in your dash.
There's no hazzard to the world, when an CEL flicker's in any of our car's.
An CEL is just a way that your car trie's to comunicate with you.
So to understand it's language, you need a tool for it, that translate's you what's the cause of your current issue.
Best bet for you would be to get yourself an code and diagnostic reader device, got me?
That way you can point out the trouble maker much easier and safe a truck load of money, instead of having to pay to greedy stealer ship's or back yard mechanic's for ONLY erasing your CEL.
These day's, you can connect & check stuff over your phone and erase finally such code's.
So again, don't freak out, ok?
For my understanding, it could be maybe an sensor that got triggered by your wrong tire size and it threw off that way, your odometer causing the flickering CEL light in your dash
See? No armageddon in sight
There's no hazzard to the world, when an CEL flicker's in any of our car's.
An CEL is just a way that your car trie's to comunicate with you.
So to understand it's language, you need a tool for it, that translate's you what's the cause of your current issue.
Best bet for you would be to get yourself an code and diagnostic reader device, got me?
That way you can point out the trouble maker much easier and safe a truck load of money, instead of having to pay to greedy stealer ship's or back yard mechanic's for ONLY erasing your CEL.
These day's, you can connect & check stuff over your phone and erase finally such code's.
So again, don't freak out, ok?
For my understanding, it could be maybe an sensor that got triggered by your wrong tire size and it threw off that way, your odometer causing the flickering CEL light in your dash
See? No armageddon in sight
Last edited by vsix; Nov 2, 2015 at 02:03 AM.
Senior Member
Joined: Apr 2012
Posts: 432
Likes: 96
From: Just north of Detroit,Michigan
2012 E350 4Matic P2
PO500 and PO720 are both speed sensor codes. It looks like you have two different diameter tires on the same axle. The 245-45-R19 does not match the opposite tires rolling diameter. Even if you are able to clear the codes via code reader, the codes will most likely return until you get the diameters equal side to side.
Good luck,
Bob
Good luck,
Bob
MBWorld Fanatic!
Joined: Jan 2008
Posts: 6,150
Likes: 533
Mercedes
If you had a flat on the back you need to put the same size tire as your other good rear tire
They both need to be the same , don't just put what some guy tells you as your rear tire sizes might be different . They need to match
They both need to be the same , don't just put what some guy tells you as your rear tire sizes might be different . They need to match
