vinkodex.
Known fault

Overnight battery drain: a control unit that will not sleep

It does not show up on every car. Check before you buy.

cheap repair

severity

not available

mileage

2

sources

2 sources next to the write-up.

The fault

How you spot it

On some cars the control units do not go into sleep mode after the car is switched off, and the battery goes flat within days. The owner typically replaces the battery, and then the fault returns, because the battery is not the problem. The search starts with measuring the quiescent current, and the labour makes up the bigger part of the bill.

Which model

Who it affects

The card opens the generation, the engine or the transmission.

Generations and models

2 generations.

Checklist

Overnight battery drain: a control unit that will not sleep

What you would check for this fault. Take it to the car.

Before you buy

Checklist

What you tick stays on this device only.

vinkodex.com · Before you buy it, see what can go wrong.

Sources

How we know

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms