B3109 2015 Chevrolet Silverado Code - Keyless Entry Transmitter 1 Battery
Quick Answer
With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the Remote Control Door Lock Receiver (RCDLR), along with the commanded keyless entry function. Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B3109 2015 Chevrolet Silverado indicates Keyless Entry Transmitter 1 Battery.
- Common causes
- Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B3109 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3109 2015 Chevrolet Silverado?
- Low Keyless Entry Transmitter Battery
- Faulty Keyless Entry Transmitter
How to Fix the DTC B3109 2015 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3109 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B3109 2015 Chevrolet Silverado Code
1. What does the OBDII code B3109 mean on a 2015 Chevrolet Silverado?
The code B3109 indicates an issue with the Keyless Entry Transmitter 1 Battery, typically meaning the fob's battery is low or has failed.
2. What are the symptoms of the B3109 code on a 2015 Silverado?
Symptoms include difficulty locking/unlocking doors, failure of the remote start function, or a key fob that doesn't respond.
3. What causes the B3109 code in a 2015 Chevrolet Silverado?
The most common cause is a depleted battery in Keyless Entry Transmitter 1, but it could also indicate a problem with the key fob itself or interference from other devices.
4. How do I fix the B3109 code on my Silverado?
Replace the battery in the key fob with a new one, ensuring it’s the correct type (usually CR2032). If the problem persists, test or replace the key fob.
5. How do I know if the key fob battery is dead?
If the fob stops working or only works intermittently, it’s likely the battery is dead. You may also see a dashboard alert for a low key fob battery.
6. Can I clear the B3109 code without replacing the battery?
Clearing the code without replacing the battery may not solve the issue, as the problem will likely recur until the battery is replaced.
7. What type of battery does the 2015 Silverado key fob use?
The key fob for the 2015 Chevrolet Silverado typically uses a CR2032 lithium coin battery.
8. How long does a key fob battery last in a 2015 Silverado?
The battery usually lasts 2-3 years, depending on usage and environmental factors.
9. Could a bad key fob cause the B3109 code?
Yes, if the key fob itself is damaged or malfunctioning, it could trigger the B3109 code even if the battery is new.
10. Is it safe to drive with the B3109 code active?
Yes, but you may lose the convenience of keyless entry and remote start functions, so it’s best to address the issue promptly.
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