What is the battery model for the BMW 5 Series remote control?
2 Answers
BMW 5 Series remote control battery model is CR2032. CR2032 material composition: It adopts a lithium-manganese dioxide structure, with chemically stable manganese dioxide as the positive electrode material and metallic lithium as the negative electrode material. The electrolyte is lithium battery electrolyte, mainly composed of dimethoxyethane, propylene carbonate, and lithium perchlorate. It has a button-like shape and is commonly referred to as a button lithium battery or lithium-manganese button cell. Detailed steps for replacing the BMW 5 Series remote key battery: Remove the integrated key from the remote; Insert the key into the slot; Remove the battery cover; Install a new battery of the same model with the positive pole facing up; Close the remote cover; Dispose of the old battery at a recycling point or service department; New remotes can be obtained from the service department.
I've been driving a BMW 5 Series for several years. The remote key usually uses a CR2032 3V coin cell battery, which can be bought at supermarkets or auto repair shops. Last time when the battery died, I couldn't unlock the door, which was quite embarrassing, so I went straight to the dealership. The technician said this battery model is commonly used in older 5 Series models, with each battery lasting over a year depending on usage—frequent remote starts or unlocks drain it faster. Replacing it yourself is simple: gently pry open the key casing with a small screwdriver and swap in a new battery, but don't use too much force to avoid damaging the circuit board. It's recommended to check every six months if the key's light dims and keep a spare battery at home. Battery types may vary by model year; for example, post-2018 models sometimes use CR2450, which has slightly more capacity, but CR2032 remains the most affordable and hassle-free option. A dead key battery can affect secure starting, so timely replacement is wise.
