New member new car problems already lol
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2016 E400 4Matic Coupe
2016 E400 4matic Coupe P2101 code
Hi guys and gals,
All the way up in Northern Alberta Canada. Had a long cold snap for over 3 weeks with -47 with windchill. My car isn't happy atall.
All the way up in Northern Alberta Canada. Had a long cold snap for over 3 weeks with -47 with windchill. My car isn't happy atall.
Last edited by JBatesE400; Jan 7, 2022 at 09:29 PM.
Thread Starter
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2016 E400 4Matic Coupe
Ok so the other day I cold started it and went inside for 5mins came back out and I heard it revving highly like way past 1000rpm by its self but dropped down to idle as I walked up. Check engine light was on but I didn't scan the car I turned it off and on and the light went away. Today I was driving down the highway and after about 2hrs straight driving the car starting misfiring lost all Power and smoking out of the exhaust from unburnt fuel. I'm guessing the Throttle body wasn't opening atall. I pulled over shut the car off plugged in scan tool and got 9 codes starting with P2101 Throttle Actuator. I cleared all the codes restarted the car and everything was running smoothly and running perfectly again. After another few hours I reached the city and bam check engine light again car running perfectly but P2101 back again.
Last edited by JBatesE400; Jan 7, 2022 at 09:50 PM.
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Joined: Jul 2019
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CLS400 4Matic EC Tuned
For the cold start bit, was your car parked outside? In those negative temperatures, the 400 engine idles around the 1000rpm mark and then dips down after 30 seconds in average weather. But with extreme freezing temperatures, it could've made the car hover around the 1000rpm mark longer.
Thread Starter
Junior Member
Joined: Jan 2022
Posts: 17
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2016 E400 4Matic Coupe
For the cold start bit, was your car parked outside? In those negative temperatures, the 400 engine idles around the 1000rpm mark and then dips down after 30 seconds in average weather. But with extreme freezing temperatures, it could've made the car hover around the 1000rpm mark longer.
Last edited by JBatesE400; Jan 7, 2022 at 10:38 PM.
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2016 E400 4matic Coupe bought used 2nd owner 62,000kms on Engine.
Ok so the other day I cold started it and went inside for 5mins came back out and I heard it revving highly like way past 1000rpm by its self but dropped down to idle as I walked up. Check engine light was on but I didn't scan the car I turned it off and on and the light went away. Today I was driving down the highway and after about 2hrs straight driving the car starting misfiring lost all Power and smoking out of the exhaust from unburnt fuel. I'm guessing the Throttle body wasn't opening atall. I pulled over shut the car off plugged in scan tool and got 9 codes starting with P2101 Throttle Actuator. I cleared all the codes restarted the car and everything was running smoothly and running perfectly again. After another few hours I reached the city and bam check engine light again car running perfectly but P2101 back again.
Ok so the other day I cold started it and went inside for 5mins came back out and I heard it revving highly like way past 1000rpm by its self but dropped down to idle as I walked up. Check engine light was on but I didn't scan the car I turned it off and on and the light went away. Today I was driving down the highway and after about 2hrs straight driving the car starting misfiring lost all Power and smoking out of the exhaust from unburnt fuel. I'm guessing the Throttle body wasn't opening atall. I pulled over shut the car off plugged in scan tool and got 9 codes starting with P2101 Throttle Actuator. I cleared all the codes restarted the car and everything was running smoothly and running perfectly again. After another few hours I reached the city and bam check engine light again car running perfectly but P2101 back again.
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Joined: Sep 2015
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From: Chicago area
2015 E400 and 2015 GLK350
I don't know if you have serious issues or not, but I can tell you that my 2015 E400 is definitely "grumpy" for a few minutes of driving after a cold start at temperatures like 15F. A couple of days ago, it took 10-15 minutes of driving on 40 MPH surface roads to reach normal operating temperature.
While the engine is warming up, the car accelerates sluggishly and shifts funny. Once it warms up, all is well.
While the engine is warming up, the car accelerates sluggishly and shifts funny. Once it warms up, all is well.
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