Paul Sharrock
Member
- Joined
- Aug 22, 2020
- Messages
- 10
- Reaction score
- 3
- Your Mercedes
- Eclass W213 E220d
I have a 2017 E220d, the message on screen was auxiliary battery malfunction. After help from this forum and others I have just fitted a new unit which I purchased from Ebay £34 with 2 year guarantee. The location is the passenger footwell as stated and takes only 30 mins to do the job, I noticed this is where the cabin pollen filter is also located.
Step 1 remove the passenger door carpet cover by pulling up.
Step 2 remove the side footwell plastic trim by pulling towards the drivers side direction.
Step 3 remove the upper cover located underneath the glove box (1 torx screw only) then pull down. be careful as there are 2 electrical connectors on this panel. (disconnect)
Roll back the carpet in the passenger footwell.
Step 4 remove 3x 10mm nuts which secure large black plastic cover over the voltage converter, lift off upwards.
Step 5 remove 1 x 10mm nut securing the converter to the mounting bracket then lift out of the lower support, disconnect the 3 pin connector, observe orientation! it does look like you could put this connector on reversed quite easily however the is a keyway in it which should prevent this happening.
Reverse above steps to finish
Hope this helps to boost anybody's confidence if they are thinking to do it themselves.
Step 1 remove the passenger door carpet cover by pulling up.
Step 2 remove the side footwell plastic trim by pulling towards the drivers side direction.
Step 3 remove the upper cover located underneath the glove box (1 torx screw only) then pull down. be careful as there are 2 electrical connectors on this panel. (disconnect)
Roll back the carpet in the passenger footwell.
Step 4 remove 3x 10mm nuts which secure large black plastic cover over the voltage converter, lift off upwards.
Step 5 remove 1 x 10mm nut securing the converter to the mounting bracket then lift out of the lower support, disconnect the 3 pin connector, observe orientation! it does look like you could put this connector on reversed quite easily however the is a keyway in it which should prevent this happening.
Reverse above steps to finish
Hope this helps to boost anybody's confidence if they are thinking to do it themselves.
