The terminals of the battery have oxidised.

[zolakhatriim]

Greetings everyone, I have recently observed that the battery connections have deteriorated at both the positive and negative terminals of my vehicle. One is completely removed, while the other remains suspended. Does anyone have any remedies for this issue or an estimate of the potential repair costs? Salutations

[rowenanp]

Is it solely the cable within the battery compartment that has detached?
You may locate a terminal connector of that dimension and simply attach it (assuming the wire is not excessively corroded) or explore eBay for second-hand options or repair kits. If the studs remain intact, they require cleaning and the application of dielectric grease. It is equally crucial to identify and rectify the water infiltration while ensuring that the area remains dry. The tail light seal or tailboard seal is the most prevalent, though I am uncertain regarding the convertible complications.

[ezra.olawaleer]

I apologise for my message; I failed to read yours, which is precisely where the issue resides.

[liora_zabalaz]

The transfer points are no longer functional; visit realoem.com to search for the replacement part number. They are both positive connections, one to JBE and the other to the engine.

[wrenpapadopoulosbs]

https://www.realoem.com/bmw/

[wrenpapadopoulosbs]

[ezra.olawaleer]

It appears that the drainage channels require cleaning; is it a convertible? Four series? Abundant information regarding them.Additionally, the seals of the rear lights may permit leakage into the battery compartment.

[ezra.olawaleer]