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Billy
Billy, Trainer/ Master Technician
Category: Car
Satisfied Customers: 3498
Experience:  Trainer 8+ years, master tech. 10+ years, SAE member
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Mercedes 320cdi elegance year 2005 the trunk door has to be

Resolved Question:

Mercedes 320cdi elegance year 2005 the trunk door has to be opened with mechanical key and 3rd brake light not working or reg plates either
Submitted: 4 years ago.
Category: Car
Expert:  Shantal-Mod replied 4 years ago.

Hello,

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Thank you,

Shantal
Customer: replied 4 years ago.
Can wait ok
Expert:  Shantal-Mod replied 4 years ago.

Hello,

Thank you for getting back to me. We will continue to look for a Professional to assist you.

Thank you for your patience,

Shantal

Expert:  Billy replied 4 years ago.
Hello and welcome! I'm Billy and i will assist you with this.

My apologies for the delay, thank you for your patience.

First, i would check the wiring harness getting to the trunk, it should be covered by a rubber sleeve, which if moved you would be able to see the wires, check for any broken wires first.

Kindly get back to me with your findings, or if further assistance is needed.

Regards,
Billy
Customer: replied 4 years ago.
Have tried this already and no joy
Expert:  Billy replied 4 years ago.
Hello,

Did you check for any blown fuses?
What was already checked?
which MB model do you have (E class, C etc... estate or sedan)?
Customer: replied 4 years ago.
Checked fuses they ok. It is 05 320cdi Elegence
Expert:  Billy replied 4 years ago.
Hello,

Which model (e class, c class, s class etc)? and is it a sedan or estate?
Customer: replied 4 years ago.
E class Saloon
Expert:  Billy replied 4 years ago.
Hello,

My apologies for the delay....

I would next remove the trim in the trunk, and check if the parts are getting power supply, check the wiring and connectors under the trim, and if you are not getting power, we will get to check the SAM.

Regards,
Billy
Customer: replied 4 years ago.
There is no power connections and wire ok. The reg plate lights and 3 rd brake light not working and electric trunk look not working with the key or door switch. Are all these connected??
Expert:  Billy replied 4 years ago.
Hello,

They have the wiring harness in common.

This is a very common issue on your model. The tube covering the harness would have broken wires inside. MB issues a technical service bulletin, which i will include, as it contains the details, so you proceed and check accordingly. This is most likely the fix for your problem. However, get back to me with your findings, or if further assistance is needed.

Click here for TSB

Regards,
Billy
Billy, Trainer/ Master Technician
Category: Car
Satisfied Customers: 3498
Experience: Trainer 8+ years, master tech. 10+ years, SAE member
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