Why does my Volvo Car not start when the engine is off?
Checking the battery voltage with a multimeter will reveal a lot. You should get at least 12V across the battery terminals with the engine off and around 14V with the engine on. The connections at your Central Electronic Module or CEM could be corroded, preventing engine start.
When to disengage the support battery in a car?
When the capacity of the battery has fallen below the lowest permissible level then the Start/stop function is disengaged. The engine auto-starts without the driver lifting his/her foot from the foot brake pedal. The support battery normally requires no more service than the normal starter battery.
Where is the battery in the start / stop function?
Cars with the start/stop function are equipped with two batteries – one more powerful 12 V starter battery for starting and one support battery that helps during the function’s starting sequence. The 12 V support battery is located in a box next to the strut tower.
Why does my Volvo Cem not turn on?
If you have been having intermittent electrical issues such as wipers randomly turning on, for example, CEM could be the problem. If your Volvo doesn’t start in extremely cold or hot weather, the CEM module could also be the culprit. This guide explains common Volvo CEM electrical problems.
How many miles does a Volvo V40 run?
First post after the introduction one. Have not used the V40 a great deal since getting it, but today we had a run up to Stirling then along to Callander and from there home, 143 miles. It was a nice sunny afternoon and the car ran well until about 3 miles from home.
When does the engine cut out in a Volvo?
The engine will cut out when the car is coasting below about 4mph but if it speeds up (even with the clutch up and in neutral) it should instantly start agian. Thanks for the replies and it would appear to be a problem being experienced by a number of owners.