martin_sv
Senior Member
- Joined
- Jul 6, 2012
- Messages
- 93
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- Location
- North Hampshire
- Your Mercedes
- 350SL R230 2003 + CLK320cdi 2006+ 156 Alfa
Hello everyone as per subject line plus a bit more after my investigations. Got the N/s numberplate light failure message on my R230 SL 2003. Bulb not alight but bulb tests out fine and lights up with 12volts. Checked the voltage appearing at the terminal when switched on. reads 0.4 volts, doesn't sound good. Checked resistance on assumed live terminal (LH) and earth terminal, 12ohm and 0.3ohm respectively. Certainly the earth seemed fine. ( its only a £5 multimeter) Checked out other working N.P. light same values. I thought I'd then check the voltage at the working light when switched on read The same 0.4volts. What?. It gets worse replacing the working side bulb and you've guessed it---it's now not lighting up.
Any ideas? Is the second bulb now not working caused by something annoying like the CAN bus system shutting off voltage to the terminals? Oviously I need to fix these major items absolutely vital to road safety so I can pass my MOT :lol:
Any ideas? Is the second bulb now not working caused by something annoying like the CAN bus system shutting off voltage to the terminals? Oviously I need to fix these major items absolutely vital to road safety so I can pass my MOT :lol:
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