B2645
B2645: Body Control Module (BCM) Malfunction - Exterior Lighting
📖 What Does B2645 Mean?
Symptoms
- • Inoperative or flickering exterior lights
- • turn signal lights not functioning
- • brake lights not illuminating
Common Causes
- • Faulty BCM
- • wiring issues
- • blown fuse
- • faulty exterior light bulbs
- • or a malfunctioning exterior light switch
Possible Solutions
1. Check and replace blown fuses. 2. Inspect and repair wiring issues. 3. Replace faulty exterior light bulbs. 4. Test and replace the BCM if necessary.
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❓ Common Questions About B2645
Can I drive with code B2645?
You can drive for a short time, but should address code B2645 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix B2645?
The estimated repair cost for code B2645 is between $50 and $200. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
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Other codes that may appear with B2645
B2643: Power Window Circuit Malfunction
B2644: Seat Position Sensor Circuit Malfunction
B2646: Immobilizer System Malfunction
B2647: Audio System Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system