Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISSTARTING AND CHARGINGTECHNICAL SERVICE BULLETINS
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Starting and Charging: Technical Service Bulletins
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Technical Service Bulletins
- Recalls
- Customer Interest
- SRS Front Sensor - Moisture In Connector X13
- Electrical System - Intermittent Component Operation
- Wiring Harness - Pinched in Power Rear Seat Rails
- Charging System - Possible Insufficient Charge
- Exterior Mirror - Sporadic Operation
- Low Beam Indicator - Lights When Cruise Control Engaged
- Keyless Sys. - Remote Control And Comfort Access Inop.
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- SRS Front Sensor - Moisture In Connector X13
- Electrical System - Intermittent Component Operation
- Wiring Harness - Pinched in Power Rear Seat Rails
- Charging System - Possible Insufficient Charge
- Exterior Mirror - Sporadic Operation
- Low Beam Indicator - Lights When Cruise Control Engaged
- Keyless Sys. - Remote Control And Comfort Access Inop.
- Driveability
- Erratic Operation
- False instrument warning light/gauges
- Inoperative
- Leaks
- Low, Dead battery
- Overheating
- Recalls
- Starting problems
- All Technical Service Bulletins
- Electrical - 90AH Absorbed Glass Matt Battery Replacement
- Audio/Battery - Failures Caused By Aftermarket USB Cable
- Electrical System - Parasitic Draw Measurement
- Electrical - Updated Battery Registration Procedure
- Battery - Charging Voltage Change
- SRS Front Sensor - Moisture In Connector X13
- Relays and Fuses - Locations Have Been Changed
- Electrical/Electronic Systems - Troubleshooting Hints
- Electrical System - Molded Wire Connector Repairs
- Molded Wire Connectors - Repair Kit
- Electrical System - Intermittent Component Operation
- Wiring Harness - Pinched in Power Rear Seat Rails
- Uncoded Lock Cylinders - Service Kits
- Power Window/Sunroof Control - Revised Operation
- Battery - Additional Electrolyte Level Checks
- Battery - Acid ( Electrolyte) Precautions
- Battery - Jump Starting the Vehicle Is Not Recommended
- Tools - Fully Automatic Battery Charger
- Battery - Measuring State of Charge
- Battery - Maintenance System
- Charging System - Possible Insufficient Charge
- Altermator - New 115A Design
- Fusible Links - Available Types
- Starting - Ignition Key Cutting Services Caution
- Starting - Troubleshooting Long Cranking Times
- Recall - Brake Light Switch Melts
- Electrical System - Non Approved Aftermarket Accessories
- Electrical Troubleshooting Manuals - Revisions
- Tools - Service-Tester Universal Adapter
- Exterior Mirror - Sporadic Operation
- Electrical Trouble Shooting Manuals - Available on CD
- ETM - Supplements Instructions
- Electrical Troubleshooting Manuals - Final Edition
- Electrical Trpoubleshooting Manual - Revision
- Electrical Interruption - Hang Tag
- Electrical Connector - Probing Kit
- Electrical Repair Kit IV - Additional Connectors
- Electrical Connector Kit Supplement
- Special Tools - Electrical Pin and Antenna Mast Tools
- Tools - 26-Pin Plug-Type Connector Adapter Cable
- Electrical Connector Kit 4 - Supplement
- Low Beam Indicator - Lights When Cruise Control Engaged
- Electrical - 2 and 3 Pin Plug Connector Seal Information
- Electrical - Wiring Harness Repair Information
- Electrical - Battery Charging And Testing Procedure
- Computers/Control - Loading/Activation Of Enabling Codes
- Keyless Sys. - Remote Control And Comfort Access Inop.
- Electrical - Battery Maintenance Requirement Information
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.