Most full-size gas grills are equipped with a small chain with a small metal rod attached to the end of the chain.
This chain/stick is called a matchstick rack. If there is something wrong with the electronic ignition system, it can be used to light the grill manually.
The following figure describes the use of the matchstick rack on most models, but please refer to the user manual of the specific model before trying to light the grill manually.
If there is something wrong with your ignitor, you can get a replacement part here. To quickly find the correct parts, please send us the pics of your whole grill and model label to Support@grillpartsreplacement.com. We are here for you.