W169 A170 2005 Model

[Lungile Mgijima]

The car cranks but won't start, have tested/checked the fuel pump, spark, and injectors they all work fine. The only visible problem is no power/pulse to the injectors even tried to feed or pour petrol directly through the injector holes and it started or idled.

 

[mattkh]

The car cranks but won't start, have tested/checked the fuel pump, spark, and injectors they all work fine. The only visible problem is no power/pulse to the injectors even tried to feed or pour petrol directly through the injector holes and it started or idled.

Mileage ??
Has the problem just happened or did it gradually get worse..????

 

[Lungile Mgijima]

Mileage ??
Has the problem just happened or did it gradually get worse..????

194865 km and the problem was intermittent but now it's permanent, and won't start at all.

 

[V6Matty]

When you plug the key into the ignition do you hear the steering lock disengage?
It could be two things here, either the ESL (electronic steering lock) or EIS (electronic Ignition system), both will prevent starting as drive authorisation isn’t given to the ECU I think

 

[ajlsl600]

Get codes read. Go from there. Guessing is a ballache and often a money pit. My "guess" crank sensor. Is battery really good . If crank sensor fd or signal rpm too low ecu won't open feeds to injectors as won't recognise start attempt . No fuel, no start . If u get it to fire, feeding it fuel I think likely as above

 

[Lungile Mgijima]

Mileage ??
Has the problem just happened or did it gradually get worse..????

When you plug the key into the ignition do you hear the steering lock disengage?
It could be two things here, either the ESL (electronic steering lock) or EIS (electronic Ignition system), both will prevent starting as drive authorisation isn’t given to the ECU I think

I took the ignition lock for inspection and they said it was fine only the key needed to be bought, of which I did buy and had it programmed but to no avail problem persists, as for the ESL there's a sound every time the key is put into the ignition.

 

[Lungile Mgijima]

Get codes read. Go from there. Guessing is a ballache and often a money pit. My "guess" crank sensor. Is battery really good . If crank sensor fd or signal rpm too low ecu won't open feeds to injectors as won't recognise start attempt . No fuel, no start . If u get it to fire, feeding it fuel I think likely as above

I bought a new battery because of this problem and no codes were shown by the diagnostic machine

 

[ajlsl600]

Difficult to advise then.. gut says css but I have little evidence, suggest you check all wiring to from eng, sensors, plugs and go from there

 

[Lungile Mgijima]

Difficult to advise then.. gut says css but I have little evidence, suggest you check all wiring to from eng, sensors, plugs and go from there

aah thanks anyway

 

[V6Matty]

I took the ignition lock for inspection and they said it was fine only the key needed to be bought, of which I did buy and had it programmed but to no avail problem persists, as for the ESL there's a sound every time the key is put into the ignition.

With this and when else you mentioned then I’m guessing it is something to do with the drive authorisation not being sent to the ECU, sounds daft but have to tried giving it the good old hard reset (removing the battery for 30 minutes) and giving it a try then?
After that I’m afraid it’s a session on STAR to dev into what’s going on during cranking to understand what the issue is

 

[mattkh]

aah thanks anyway

Please put up a picture of what is under he bonnet.

 

[Lungile Mgijima]

With this and when else you mentioned then I’m guessing it is something to do with the drive authorisation not being sent to the ECU, sounds daft but have to tried giving it the good old hard reset (removing the battery for 30 minutes) and giving it a try then?
After that I’m afraid it’s a session on STAR to dev into what’s going on during cranking to understand what the issue is

Yes, I was thinking of buying one of those plug-and-play ECM online.

 

[Lungile Mgijima]

Please put up a picture of what is under he bonnet.

Will do