Lock and unlock the door 5 times in a row with the remote. It is possible that volvo s immobilizer does not recognize the key due to a bad transponder.

Fix No Crank No Start Immobilizer See Manual Volvo S40 Low Brake Fluid Stop Safely Failure Youtube

If the immobilizer system is on you may see a security warning light.

Volvo won t start immobilizer. One answer is simply to wait according to the manual after 5 hours the immobilizer will reset and in fact the next morning the car started fine. Confirm that the engine immobilizer system security system is not activated thus preventing the car from starting. Although this will prevent a car from starting it is usually accompanied by a crossed out key light on the dashboard.

Typically it sounds like it wants to start but doesnt. If your volvo won t start and you are getting an immobilizer message plus your volvo is acting strangely and is displaying several random messages such as abs airbag steering failure the chances are that the central electronic module cem module is the culprit. If there is no starter motor operation at all that is if there is no starter operation with the key held in the start position the procedure is to test for power and voltage drops to the starter motor.

This will reset immobilizer and allow you to start the car. Usually there will be some kind of indicator light on the dash when this happens. Reset the immobilizer on your volvo.

I took it into a independent volvo shop today and was told that the connection on the antenna ring sometimes goes bad but the ring itself rarely needs to be replaced taking off the connector and spraying with contact cleaner is all it needs. Even if the key fob unlocks the car the key may still have a bad transponder chip inside. Yes that is the exact function of the immobilizer to cut off the fuel pump when the car thinks its being stolen.

These units are known to fail. If the warning light is on to temporarily override the immobilizer system see these instructions.