Help please anyone?......New crankshaft position sensor didn't help
I was on my way home one evening and I noticed the ES (Engine service) light on my dash was on, I noticed a slight miss in the engine. the car died about a minute later. Had it towed home. looking I found fuse 49 had blown, I replaced this fuse (while the car was cool) it started back up and ran until it heated up then died. I got it to start again and it started ran a sec. then died with ES light on. Read about the crankshaft position sensor and it very much sounded that way so I ordered one off Amazon (Part No. 0 261 210 170 made by Bosh) I changed the sensor and the battery was not connected. Car starts, ES light is off, is running then in a couple of minutes it dies. I let it cool and it started again, ES light is on now, it runs for a short while and dies, now starts and immediately dies. Do I need to reset something or what? Where should I start and what should I test and how? I have an auto ranging multimeter (Southwire 10040N). Where should I start? Please give me some direction?
Last edited by Supermotoman; Jul 5, 2018 at 01:49 AM.


If you plan to drive a Mercedes Benz vehicle for some time, and you plan to do your own repairs and maintenance (the only way most of us can afford the cars), the best approach is to buy a Chinese clone of the Mercedes SDS (Service Diagnostic System). This is a multiplex unit to connect to the car's computers, the SDS software, and a suitable laptop, usually a Dell D-630 or D-830. You can find the multiplexer, cables and software on-line for less than $250, buy a Dell and the parts to max it out off eBay for less than $100, and be ready to go. It is a complex, hard to learn system, but nothing else comes close to doing the job. There are dozens of threads here and on BenzWorld on the SDS.
Until you have at least a problem code, everything is random guesses...
As far as testing, I had a known good sensor from my wife's car and put it in mine. Worked like a charm.
New pars don't always guarantee they're going to work properly.
cheap scanners are $25 on Amazon . Get the code and report back , without the code we cannot guess what it might be
in terms of the various code scanners ,
there are hundreds of options , a basic $20 scanner will do fine to read obd codes that turn on the check engine light
if you want to move up in sophistication get a icarsoft mbii which is about $150 which can read suspension and airbag and other codes in addition to engine codes
next step up is Xentry clone of Mercedes SDS computer which is about $400 to give factory level diagnostics
Last edited by tusabes; Jul 12, 2018 at 01:04 AM.
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well a car with a bad battery will often die out due to undervoltage ! The alternator is not always powerful enough to keep it from dying out
Get a good new battery in there I bet your problem will be solved





