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C300 Rev limiter?

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Old 08-03-2008, 01:20 PM
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Mercedes 1994 E420
C300 Rev limiter?

Ok, so I test drove the 6spd for a second time at the dealership, and I really wanted to push the car to its limits. I kept running into the RPM limit at around 4k-5k where the engine would "stall" until the RPMs were in the designated "safe zone". Can anyone who owns a 6spd confirm whether or not this is a dealership installed function that is removed when bought? Or is this something MBUSA put in as a "safety" measure? (It's more of a hazard than a safety mechanism...)
Old 08-03-2008, 01:35 PM
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2008 c300
Originally Posted by Efchou
Ok, so I test drove the 6spd for a second time at the dealership, and I really wanted to push the car to its limits. I kept running into the RPM limit at around 4k-5k where the engine would "stall" until the RPMs were in the designated "safe zone". Can anyone who owns a 6spd confirm whether or not this is a dealership installed function that is removed when bought? Or is this something MBUSA put in as a "safety" measure? (It's more of a hazard than a safety mechanism...)
I encountered the same problem testing a BMW. - engine just quit at 4000rpm. A very embarrassed salesmen discovered that the service dept had forgotten to remove the safety limiter, installed during shipping. I guess its put there to stop the shipping guys having too much fun!

Didn't you ask the salesman?
Old 08-03-2008, 01:41 PM
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4-5K? I think peak power is around 6K. I have the C350, but I think even the C300 redlines in the 6xxx RPM range, probably higher than mine. 4-5 doesn't sound right. Maybe the dealer programmed the ECU for test drives?! Haven't personally heard of such a thing, but I guess I wouldn't be surprised. That or maybe something was messed up on the car?!
Old 08-03-2008, 01:45 PM
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Originally Posted by keith100
I encountered the same problem testing a BMW. - engine just quit at 4000rpm. A very embarrassed salesmen discovered that the service dept had forgotten to remove the safety limiter, installed during shipping. I guess its put there to stop the shipping guys having too much fun!

Didn't you ask the salesman?
I did, but he said it was a safety feature installed by the factory, he didn't know ***** about the car though. He just knew how to be an a-hole salesman(I didn't want him in the car during the test drive). So that is why I am asking those who own the 6spd C300 if they run into the same problem.

Last edited by Efchou; 08-03-2008 at 01:48 PM.
Old 08-03-2008, 01:46 PM
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Originally Posted by Krytech
4-5K? I think peak power is around 6K. I have the C350, but I think even the C300 redlines in the 6xxx RPM range, probably higher than mine. 4-5 doesn't sound right. Maybe the dealer programmed the ECU for test drives?! Haven't personally heard of such a thing, but I guess I wouldn't be surprised. That or maybe something was messed up on the car?!
On the gauge it redlines around 6.5k-8k but yea, I agree that something is definitely "modified"
Old 08-03-2008, 02:32 PM
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1) Thats why some people have issue with buying a demonstrator - would you be willing to buy it.
2) You never stated what gear you were in when this occured while abusing the car on the test drive.
Old 08-03-2008, 03:02 PM
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[QUOTE=amdeutsch;2973038]1) Thats why some people have issue with buying a demonstrator - would you be willing to buy it.


I couldn't agree more and is the reason why I either order a new car or I check the inventory to see if I can find one with like 3 miles on it.
During both of my test-drives the salesman told me to push ( C300 and C350 ) them hard to see what they were capable of
I have heard of the factory installing rev limiters on new cars before shipment as well. Makes perfect sense to me and I support it.
Sounds like you had a rookie salesman.
Old 08-03-2008, 03:15 PM
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2015 Iridium Silver Luxury Edition C300 4Matic
My C300 goes over 6,000 RPM.

My automatic C300 goes over 6,000 RPM, when floored.

Pierre

Originally Posted by Efchou
Ok, so I test drove the 6spd for a second time at the dealership, and I really wanted to push the car to its limits. I kept running into the RPM limit at around 4k-5k where the engine would "stall" until the RPMs were in the designated "safe zone". Can anyone who owns a 6spd confirm whether or not this is a dealership installed function that is removed when bought? Or is this something MBUSA put in as a "safety" measure? (It's more of a hazard than a safety mechanism...)
Old 08-04-2008, 12:27 AM
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Originally Posted by amdeutsch
1) Thats why some people have issue with buying a demonstrator - would you be willing to buy it.
2) You never stated what gear you were in when this occured while abusing the car on the test drive.
1.) No
2.) Occurred in all the gears that hit over 4k
Old 08-04-2008, 04:39 AM
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white and whiter
it's a limiter on the manual, so that people who test drive it can't **** it up. if you want to feel the power test drive an auto.
Old 08-04-2008, 07:56 AM
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2009 C300 sport
Still breaking mine in... i'll tell you in about 70 more miles.
Old 08-04-2008, 08:45 AM
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C300
My C300 6speed rev. limiter kicks in at 6400-6500rpm.
The first 2800 miles it never saw more then 3500rpms btw.
When I buy a new car, 0-15 miles is the max that is on the odometer since I don't want a beat up test drive *****.
Old 08-04-2008, 09:22 PM
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Cool, thanks for your info! So something may be wrong with the car, it would make sense that it prevents it at the redline. But not at such a low RPM!
Old 08-06-2008, 02:12 PM
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Hopefully people can clarify this
Old 08-06-2008, 03:57 PM
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white and whiter
uh...did you not read what others said?

dealership can put a rev limiter lock on it with STAR if they want. for test drives they are definitely not going to let you **** up their brand new car. some dealer doesn't car, some do.

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