OBD2 connector missing

[mioba]

look on ebay, always cars being broken

 

[flex]

Still looking folks. Have searched all of 1,2,3 and 6-9. Tried to get fascia off to check 4 and 5 but it doesn't want to come off. Anybody any tips on how to remove it without damaging it?



I've been in touch with again with bloke at the nearest Mercedes dealer. He is insistent that it should be in the expected place beside bonnet release. He had not ever heard of it being missing without it being obviously removed - ie. visible cut wires. There are no cut wires coming out of the ECU end as far as I can determine nor any visible in behind the panel at locations 1-3. He tells me that if there are no cut wires then I'll need a complete wiring loom and new port and the vehicle will have to go down to them and it'll cost me anything between £1500 and £3000. Can't afford that. He's willing to come up for a fee of £50 and remove the ECU and take it back down there but on top there will be a several hundred quid to read it, reset etc. That's no use to me for the future if the car ever develops another fault code as the whole shooting match will have to be repeated. The original mass of fault codes when son brought car down all disappeared after auxiliary battery was disconnected and reconnected as mentioned in earlier posts. Have just fitted brand new auxiliary battery in the hope of solving this as with no visible cut wires the darned thing just HAS to be somewhere within a 3 ft radius of the ECU.

Just in case I have not spotted it at 6, 7 or 8 - will it be right in your face dead obvious when the panels and radio are pulled out of the way or is it hiding in an awkward hard to see spot?

 

[flex]

UPDATE TO ABOVE
I’ve had car running sitting in garage for over an hour with no fault messages. I found a fuse diagram for the small fuse box the right of dashboard. The fuse for the diagnostic system is no.30. This fuse is live and giving out correct voltage. A black wire is coming from that position and does not appear to be cut - a slight tug has not produced a cut end anyways! This wire is heading off upwards in the direction of the dashboard dials as far as I can determine. Two questions spring to mind.
1. Can a simple push, click and pull from behind, remove the dashboard dials without disconnecting anything as I can do in my E320 W210? I can then check for a port there.
2. If I can successfully remove the interior dashboard panel at 4 and 5 in the image in previous post, is that a likely end point for the black wire from fuse 30?

 

[mioba]

Sorry but how do you know there is no faults when you have no scanner connected. Just by the dash.

 

[flex]

Yep. That’s all I have to go on. They’ll be sitting on the ECU but till I find the OBD2 port, I can’t cancel them so yes, they are probably still there but the current situation is better than them all appearing on the dash every time the ignition was on like it was before the auxiliary battery was disconnected and reconnected.

 

[mioba]

have you traced back the cable from the fuse for the odb connector. thats the only way to find it.

 

[flex]

As I said earlier, it disappears upwards in the direction of the dashboard dials but I have not found where to. I’ve had the dials out to get a better view and no sign of the wire end or the OBD.

 

[Botus]

Still looking folks.

I've been in touch with again with bloke at the nearest Mercedes dealer. He tells me that if there are no cut wires then I'll need a complete wiring loom and new port and the vehicle will have to go down to them and it'll cost me anything between £1500 and £3000.

still looking for the ODB socket ?


if so the bit above - what a load of rubbish - if no wires are cut the car is 100% standard and the wires are just being elusive

 

[Botus]

UPDATE TO ABOVE
I’ve had car running sitting in garage for over an hour with no fault messages.

and now really confused.... how are you getting fault codes from a socket you haven't located ?

going to go back see if I missed a bit - worked it out you mean - instrument cluster "error messages" and or warning lights - it doesn't show faults or codes - hence whey you still want to find the socket

 

[Botus]

Just acquired a 2005 E280 CDi W211. It had an issue which I was sure I could fix so I went to plug in the diagnostic machine and couldn’t find the connector port.

the socket in its standard position is directly above the gap between the brake and accelerator pedals …. sitting on the flat black trim panel hiding the ulgy underside of the dash from being kicked with your toes. It has a 25 x 50mm fold down flap (like most mercs).

You must have unscrewed this panel to go look for the wires.... so you are telling us having unscrewed and removed the big 210mm x 400mm trim panel sitting flat above the brake and accelerator pedals - there is no random bunch of wires tucked up out of sight anywhere??? Its doesn't compute (and most likely is there within a range of 18 inches of the original location with the black socket intact)....

 

[RhodieBill]

My honest opinion. If you are that concerned with no resolution in sight, just move it on....

 

[flex]

and now really confused.... how are you getting fault codes from a socket you haven't located ?

going to go back see if I missed a bit - worked it out you mean - instrument cluster "error messages" and or warning lights - it doesn't show faults or codes - hence whey you still want to find the socket

Apologies for the confusion there. Yes, I meant messages on the dash cluster not codes. Need to knock those out of the ECU with diagnostic machine but still not found the blooming OBD port. Only the wire coming from the correct fuse which I have now found ends up at the ECU.

 

[flex]

My honest opinion. If you are that concerned with no resolution in sight, just move it on....

It’s looking like my only option tbh but I just hate being defeated! especially as the car is in brilliant condition with good mileage for it’s age and looks as good as new inside and out apart from a tiny bit of paint missing near a wheel arch and the alloy on said wheel has been scratched which is easy to get fixed locally. If I can’t get it on the diagnostic machine to clear the faults and check for anything else, I don’t want my wife driving it in case she gets stuck somewhere on her own.

 

[mioba]

A very odd post this, just doesnt add up, I would think if there was no odb port there would be some dash errors. But I am no expert in the software/hardware set up side.

 

[mioba]

Have you had an indy look at the car, it come be that some series have it another place, just thinking out loud

 

[flex]

the socket in its standard position is directly above the gap between the brake and accelerator pedals …. sitting on the flat black trim panel hiding the ulgy underside of the dash from being kicked with your toes. It has a 25 x 50mm fold down flap (like most mercs).

You must have unscrewed this panel to go look for the wires.... so you are telling us having unscrewed and removed the big 210mm x 400mm trim panel sitting flat above the brake and accelerator pedals - there is no random bunch of wires tucked up out of sight anywhere??? Its doesn't compute (and most likely is there within a range of 18 inches of the original location with the black socket intact)....

Yes, that’s pretty much it in a nutshell. It definitely doesn’t compute. All that is see in behind that panel is a connector with a bunch of brown wires going in which I have assumed is the CANBUS. Photo attached. I’m at work but will have another look later.

 

[flex]

A very odd post this, just doesnt add up, I would think if there was no odb port there would be some dash errors. But I am no expert in the software/hardware set up side.

Me neither. I could strip the mechanics and body of the thing down to the last nut and bolt and rebuild but auto electrics as complicated as these are beyond me.
There were no dashboard errors on purchase. My laddie drove it 3 miles and left in his pal’s driveway for a couple of nights. Then drove 6 miles odd to his house to pick up family. Engine off and on again. No errors. Then he drove 50 odd miles and stopped off the motorway for comfort break. Switched off. Tried to restart but no joy and a load of errors. I went to go fetch. I suspected a faulty battery but jumpleads to my old Freelander didn’t get it going nor did a wee machine for kickstarting batteries so I towed it home another 30 odd miles. Dunno if that info is of any use to electrically knowledgable folks.

 

[flex]

Have you had an indy look at the car, it come be that some series have it another place, just thinking out loud

My employer uses a very good auto electrician but catching up with him is not easy. If he’s at the yard, I’m likely out. There’s no indy around here that specialises in Mercs. No joy so far on eBay looking for correct model and year OBD with wiring loom. Nothing in the two scrappies either.
Sorry go to go - next journey needs done.

 

[Naraic]

Where are you located?
Can you take a photo of the area beside the handbrake releas where ir should be?

 

[Botus]

?

Where are you located?
Can you take a photo of the area beside the handbrake release where ir should be?

they have a foot operated park brake, its release is beneath the headlamp switch ? the ODB socket sits quite some way from that above the peddles, unless within a year they moved to 2 rather than the 1 u suggest