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simboc2004 · Mar 28th, 2021, 13:37

I have the same problem with mine - I like to turn off the engine when waiting (like a manual stop-start system!) and keep the radio on, but it disappears very quickly. The battery seems fine, but perhaps needs a top up.

I am told that the absolute vital part about topping the battery via a charger is that you MUST connect the negative lead to a chassis earth point - NOT to the battery itself - as the computer needs to be "told" that the battery has been charged and it cannot do it if you connect the leads to the terminals... what a daft system! Surely the computer should monitor what's actually in the battery, not what it thinks has been put into it!!!

Mar 28th, 2021, 13:37	#4
simboc2004 SimboC2004 Last Online: Yesterday 08:38 Join Date: May 2019 Location: Diss	I have the same problem with mine - I like to turn off the engine when waiting (like a manual stop-start system!) and keep the radio on, but it disappears very quickly. The battery seems fine, but perhaps needs a top up. I am told that the absolute vital part about topping the battery via a charger is that you MUST connect the negative lead to a chassis earth point - NOT to the battery itself - as the computer needs to be "told" that the battery has been charged and it cannot do it if you connect the leads to the terminals... what a daft system! Surely the computer should monitor what's actually in the battery, not what it thinks has been put into it!!! __________________ Volvo V70 P3 ES D3/D4 2011 - 170,000 miles in Black Stone Volvo V40 R-Design Nav Plus D4 190 - 60,000 miles in Osmium Grey Past: '90 944 2.0 turbo, '91 944 2.0, '92 945 2.0 turbo, '95 945 2.3 HPT, '09 C30 2.0D R Design 180bhp+, '13 C30 D2 Lux.