Hi folks,long time lurker,had a Leon 57 plate 2.0tdi Stylance until just recently and now got a 2015 2.0tdi FR Estate/sportback thing, so just wondering if i change the battery(as it still has the original) will the radio still work? sorry if its a stupid question but had my last car 16 years and things have moved on.When i have changed the battery on other vehicles i had to keep a 12v supply or needed a code for the radio.hope this makes sense TIA.
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changing battery
- Thread starter nap69
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Yes, radio code is stored in the instrument cluster, will work even if you swap radios and then put old one back in. As soon as the power is restored, radio talks to the instrument cluster and grabs code from there. As @TheSwede also says, make sure the car is recoded to change serial number of battery, and also any changes to battery capacity and cranking output
Why is it necessary to tell the car its battery has been changed? If it’s the correct specification it’s just a 12V power source.
My wife got caught out with this with her BMW Mini. Charged £300 for a new battery and telling the ECU it had been changed.
Is this a dealer con?
My wife got caught out with this with her BMW Mini. Charged £300 for a new battery and telling the ECU it had been changed.
Is this a dealer con?
Coding the new 12v battery to the car tells the car’s battery energy management (BEM) system the battery has been changed. The BEM system monitors the state of the battery and adjusts the charging rate as the battery ages. When you replace the battery, if you don’t code the new battery, the rate of charge applied by the BEM system will be at the level that was required by the old battery, which could shorten the life of the new battery.
So recoding the battery isn’t a dealership con, but buying a new 12v battery from a main dealer and getting them to code it to the car will mean you’re paying top dollar for the privilege.
Thanks for the info guys,i am a bit of a dinosaur as i had my last Leon for about 16 years and obviously car technology has moved on,when i changed a battery on my old car i had to keep a 12v supply or have the radio code to input.There was none of this coding a new battery BEM stuff.......times change and you have to keep learning if you want to do a lot of your own maintenance/care of the car
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