Car relay problems

Signs of a bad relay switch include engine stalls, engine not starting, dead battery in the mornings, erratic dashboard lights, and an electric smell. Those experiencing several of these problems should look to a bad relay switch as the cause of the problems.

1. What are the symptoms of a bad relay?
2. What causes an automotive relay to fail?
3. How much does it cost to replace a car relay?
4. Can I drive with a bad relay?

What are the symptoms of a bad relay?

If the relay fails it will cut off power to fuel pump and ignition system, which will result in a no power, and therefore no start condition. You may find that turning the key may power on the accessories, and may even crank the engine.

What causes an automotive relay to fail?

The two most common failure mechanisms of relays are contamination and mechanical wear of the internal switching elements discussed as follows: a. Contamination is a major cause of early life failures.

How much does it cost to replace a car relay?

The Best in Auto Repair

The average cost for starter relay replacement is between $65 and $72. Labor costs are estimated between $30 and $37 while parts are priced at $35. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

Can I drive with a bad relay?

If the relay has any sort of issue it may compromise power to the computer, which will not allow the vehicle to start. For many vehicles the engine's starting circuit is on a separate circuit and relay than the computer's, so the engine will still crank even if the computer relay has failed.