Nissan-Navara.net banner

1 - 13 of 13 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter #1
I’m really hoping someone can help me with the below.

I have an 08 d40 adventura and recently replaced the built in sat nav unit with a pioneer stereo.

Whilst doing this it reactivated a aftermarket immobiliser that a previous owner had fitted which I had no knowledge of. It went to a local mechanic who managed to bypass the immobiliser.

I got the truck back and fitted the stereo without issue and changed the neutral position switch on the gearbox as the cruise control was inconsistent.

Everything has been working great until I went to a farm and selected 4wd.

The display light does not show up on the dash and it remains in 2wd. There are no fault codes on the car and no warning lights.

I’ve also checked the switch and done a Ecu reset. Still no change.

I’m wondering if there’s a fuse that might be the culprit or whether the mechanic has caused this somehow.

Any help would be massively appreciated


Chris
 

·
Administrator
Joined
·
2,384 Posts
Some preliminary troubleshooting:

Failure to engage PLUS failure to warn you that it has not engaged means the car has no idea you told it to shift to 4WD.

It could be as simple as a fault in the selector lever, especially if you have already worked on the neutral switch.
 

·
Super Moderator
Joined
·
1,164 Posts
....I’m just worried that the mechanic has bypassed my 4wd system as well as the crappy immobiliser ?
Changing a head unit should never come anywhere near any wiring for the main harness or any alarm/immobiliser wiring. There could be (who knows why) wiring related to the immobiliser behind the head unit, but that should have remained intact.

You have two problems. The first is the immobiliser issue, that needs an Auto Electrician to remove it completely, or reinstate, that's your choice. Your head unit is unlikely to have effected this. (I am guessing you (and your mechanic!!) are handy and made a neat and clean job, I.E; only concerning yourself with ISO connectors and speakers, and the mechanic not ripping wires like a mad man, which he would need to do in order to effect the 4WD!)

Your next issue is the 4WD. Auto or manual box? You may want to pay some attention to the Transfer Control Unit, but as above, a few easier things to try first.
 

·
Registered
Joined
·
13 Posts
Discussion Starter #7
Thanks for the reply the truck is a manual.

I’ve been careful with replacing the head unit and wiring speakers but I can’t speak for the mechanic.

The immobiliser was someone’s aftermarket add on which never helps. It still beeps when the car is switched off but can’t kill the car like it did before.

However it does need to be tracked down and removed properly rather than a quick fix.
I’m going to call the mechanic and see if he recalls doing anything that may have caused this and get him to write down exactly what work he has done
 

·
Registered
Joined
·
2,726 Posts
The mechanic, I guarantee, will neither recall doing anything bad, nor will write anything down (that you might use against him).

I doubt he is at fault. You may well not know when the last time your 4WD worked ok. Could be a bad earth, loose wire, faulty selector switch, fuse etc. After that, it could be the solenoids... An ECU reset may not pan out but easy to try...
 

·
Registered
Joined
·
13 Posts
Discussion Starter #11
Tried an ecu reset by doing the pedal dance but no joy.

Does anyone know where the fuse is located?
I’m trying to deal with the simple checks first.

Thanks again guys
 

·
Registered
Joined
·
13 Posts
Discussion Starter #13
Just for anyone that was interested took it back to the mechanic who did the electrical work and he admitted he was in a rush so after a couple of minutes he discovered he hadn’t pushed a plug fully home.

Problem now totally fixed and best of all for free!

Was worth the trip rather than me spending ages testing fuses and chasing wires ?
 
1 - 13 of 13 Posts
Top