Key stuck, no start
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Hi
Volvo V50 2.4 140ch
Year 2008
Automatic gearbox
Engine B5244s5
280 000 kmSome electric problem : fuel gage read 0, but the car is well working. I decide to remove CEM to check and clean. No thing particular. Re install the CEM. After that, starter is working but engine doesn't start... I decide to remove the CEM, ECM and ABS connections to checkand clean. All seams to be OK.
Now, nothing is working... The key can select positions I, II and III, but not 0. I can’t remove the key.
ECM, CEM and key has been sent to Xemodex, all is OK. No problem found.
.How to control the ignition switch ?
Any others ideas about my problem ?Thanks for help
Have a good day. -
@Michel71 That`s a hard one to diagnose. Do you have any DTCs in the car? Is the Battery healthy (Idle voltage/ignition off + doors closed = lower than 12,5V = not okay)?
With your milage I wouldn't be surprised if the ignition switch is worn out, same for the fuel pump and ECM relais, as well as others. But I also wouldn't rely on the diagnosis of Xemodex. There are some reports of dying CEMs that were incorrectly said to be okay by them.
If want to check the electrics you can obtain the wiring diagrams for your car from here https://vidaresources.volvocars.biz/ewd/Eng/index.html the pin outs and signal descriptions can be found in VIDA under Information/product specifications/specifications electrical. If you don't have VIDA, ask the user ZaanTerror in this thread https://forum.d5t5.com/topic/249/vida-2014d-2015a-windows-11 for his version of VIDA. It's awesome and works flawless with Windows 10/11. -
@Michel71 I found something interesting while looking through VIDA regarding your problem. The key gets stuck in the SCU (ignition switch)/can't be switched to 0, when something is wrong with the immobilizer.
This can be the result of low battery voltage which leeds to the ECM, CEM, SCU losing the IMMO data or atleast the sync of this data between those ECUs; loose pins or corrosion in the connectors of the CEM, ECM, SCU; a dying CEM or ECM; water ingress in the CEM; corroded or missing ground connection at the CEM or ECM.
Just for excample, corrupted/lost IMMO data as a result of low voltage is a really common problem for P1 cars. There would be DTCs about that in the car, if that's the case, but Vdash might not be able to help you with this.
