sikhkd

Weird.. first time it happened was about 2 months ago as I was parking in my spot the car stopped- thought it was weird, started it and parked.

this past weekend, as I was pulling out of my driveway, the car turned off and I had to start it up again- it was back in good condition.


Now today, as I was heading out of my gym, I was taking a fairly quick turn and the car turned off in the middle of it! I kept pressing the gas pedal with absolutely no power for about a second or two and went back to power.

Anyone have any clue on what's going on? TIA

omar26

this happened to me before on i95 in baltimore during rush hour, lucky there was a cop behind us, n we just pushed the car over, found out it was the starter battery, never had the problem again, tho yours could be something else

Karl G

As crazy as it sounds, make sure that the batteries are strapped down and are not shorting against the chassis.

sikhkd

Anyone else, I checked the battery and they seemed fine.

the car turned off again today while on the road and turned right back on

the other day it turned off and stayed off until I put it in park and restart it

bob44

While you're waiting for an answer here, you could be killed the next time it dies unexpectedly. After happening this many times, it needs to get to the shop ASAP. Don't risk it...

sikhkd

Damn that's a little intense.. but you're right, you never know

it's going to the shop first thing tomorrow morning

kamilclk430

ummm you are not shutting is off are you JK

Had the same thing happen to me in in my Z06 loose battery connection.

bob44

Didn't mean to sound so 'intense', but it is a safety issue and you never know what situation you might be in the next time it happens. Glad you're taking it in. Good luck... let us know what they find.

sikhkd

I'm guessing it has something to do with the crankshaft sensor

sikhkd

Well.. I ended up changing the crankshaft sensor with a friend and it still happened, I was hitting about 80mph and the car lost its power.

so weird, I just got a new key for the car about last month, could it be the key by any chance? its a newer style key

kamilclk430

Same exact problem happened to me today while driving. The car shut off when I was in traffic, I had no clue what was happening since it started right back up and was breaking up a few times. I went home lifted my trunk carpet and moved the wires around on the battery. Sure enough they were loose. I got a 10mm socket and fixed the problem. Took the car for a nice 40 mile ride and had no issues.

Good Luck

KAMIL

MB_Forever

I would take the car to the dealership for diagnosis as soon as possible. As others have mentioned, this is a particularly dangerous symptom and a big safety concern. If the battery is not fault and is strapped down good, there maybe bad wiring somewhere

Please keep us posted on this......

stevebez

This can be any number of faulty sensors, bad fuel, battery short, faulty ESP, and yes could also be SBC....

The new key could also be the culprit where do you keep it while driving?

Mbe the battery inside the key is not seated properly and it loses signal to the Keyless go...

Whatever the problem this deserves a workshop lookover. My 330i did this and it was a camshaft sensor.

sikhkd

Yeah I'm guessing its either the camshaft sensor or fault wiring. I keep the key in the ignition since I don't have keyless go

haven't driven my car yet, must say I'm a bit scared to do so. Tomorrow morning it's going back to the shop for a diagnosis test to see exactly what the problem is..

Gosh, I just got the car in February and already having problems. My last car, a BMW 330ci had the same symptoms around the same exact mileage I have on the SL55 (47k) and turned out to be the alternator..

I guess it's just my luck!

sikhkd

So I gave in the car to a local indy shop, who charged me $95 to diagnose the car and tell me afterwards that it's because of a bad ignition starter.. which they can't replace because only mercedes is authorized to do it.

I gave the car to mercedes right after, and the guy tells me it's not throwing out any codes

Mysterious problem going on with the car right now, they'll keep the car overnight and find out what's going on, hopefully.

guanabara

I had a similar problem on a 99 E320 and it turned out to be the crankshaft position sensor. Apparently the same p/n is used in several models.
In any case, the above posts indicate several possible reasons for the intermittent problem. When I had the issues they usually occurred after the engine had warmed up. So that may be an additional clue for you or the repair shop.
Too bad an event such as tis that causes the engine computer to shut it down is not recorded so that the repair shop would be able to quickly replace the offending sensor.

sikhkd

I had already replaced the crankshaft sensor and it's still causing the same problems..

Well today I got the car back from mercedes, they told me they couldn't find anything wrong with it. the second I got out of the dealership, it turned off on me, twice.

I brought the car back, took the guy for a spin with me and nothing would go wrong with it!!

So the car is stuck with the dealer for a while until they figure out whats wrong with it.

sikhkd

No luck so far.. I'm guessing it might be the cam sensor but not throwing any codes?

WoodHill Motors

Let the dealership drive the car until it dies on them.

If it happens as frequently as you say it does, it shouldn't be long before they experience it.

rsr911

wel....what's the latest update?

rsr911

So what was the issue? Problem resolved?

sikhkd

Got the car back from the dealership after 3 days, they couldn't find anything and the car hasn't stopped ever since.

It's funny, because I went to another dealership (indy shop, Autoscope in Plano, TX) and they said it was my ignition starter so they have a reason to charge me a $95 diagnosis fee. Mercedes told me it was BS and didn't charge me anything since they couldn't find anything wrong with the car, and let me have a free loaner for 3 days while they worked on it

Hopefully it'll stay this way

veightkiller

never happen to me before,keep us posted.

IngenereAMG

This is a tough one. It sounds like a wiring issue somewhere.