Market Position Vehicle:
The BMW E24 6 Series was positioned as a luxury grand tourer, representing BMW's flagship coupe and convertible offering during its production run. It competed with other high-end European GTs.
Competitors:
Porsche 928, Mercedes-Benz SEC coupes, Jaguar XJ-S.
Key Features Vehicle:
Distinctive "shark nose" styling, powerful inline-six engines, sophisticated suspension, luxurious interior, focus on driving dynamics and comfort.
Manual Utility Value:
Essential resource for maintaining, diagnosing, and repairing the E24 6 Series, preserving its performance and classic status. Crucial for both enthusiasts and professional workshops.
Coverage Summary:
Comprehensive repair and workshop coverage for BMW 6 Series E24 models 633CSi, 635CSi, and M6, including Sedan, Coupe, and Convertible body styles.
Page Count Estimated:
1000+
Manual Type:
Repair Workshop Manual
Format:
Digital (likely PDF, often provided on CD or download)
Engine And Powertrain:
Engine mechanicals, engine electrical system, fuel system, fuel supply system, cooling system, exhaust system, clutch, manual transmission, automatic transmission, gearshift mechanism, driveshaft, front and rear axle.
Chassis And Suspension:
Steering and wheel alignment, brakes, wheel and tires, suspension system.
Body And Electrical:
Body, body equipment, general electrical system, instruments, heating and air conditioning, remote control system, SRS (Supplemental Restraint System), navigation system, accessories.
Maintenance And Inspection:
Routine maintenance, pre-delivery inspection, periodic checks, fluid level checks, filter replacements, belt adjustments.
Repair And Overhaul:
Engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, electrical system diagnostics and repair, body panel repair.
Diagnostics And Troubleshooting:
Diagnostic procedures for engine, fuel, ignition, electrical, and mechanical systems. Troubleshooting guides for common problems.
Engine Timing Adjustment:
Detailed procedures for setting ignition timing and valve timing (if applicable, though M30 engines are typically chain-driven with fixed valve timing).
Technical Depth:
In-depth technical information suitable for professional mechanics and experienced DIY enthusiasts, covering diagnostics, component testing, specifications, and repair procedures.
Wiring Diagrams Included:
Yes, typically includes detailed electrical system diagrams for troubleshooting and repair.
File Format:
PDF (typically, with searchable text and high-resolution diagrams)
Print Quality Digital:
High resolution, suitable for on-screen viewing and printing of individual pages.
Binding Type:
Not Applicable (Digital Format)
Paper Type:
Not Applicable (Digital Format)
Manual Completeness:
This manual is designed to be a complete service and repair guide, covering all major mechanical, electrical, and body systems of the specified E24 models.
633Csi Engine:
M30B32 inline-6, 3.2-liter (3210 cc), Bosch L-Jetronic fuel injection.
635Csi Engine:
M30B34 inline-6, 3.4-liter (3430 cc), Bosch L-Jetronic fuel injection (later Motronic).
M6 Engine:
S38B35 inline-6, 3.5-liter (3453 cc), Bosch Motronic fuel injection, individual throttle bodies, higher compression ratio.
633Csi Horsepower:
Approx. 197 hp @ 5500 rpm
635Csi Horsepower:
Approx. 218 hp @ 5200 rpm (US Spec), 224 hp @ 5200 rpm (Euro Spec)
M6 Horsepower:
Approx. 256 hp @ 6500 rpm (US Spec)
M6 Torque:
Approx. 243 lb-ft @ 5000 rpm (US Spec)
633Csi Torque:
Approx. 210 lb-ft @ 3500 rpm
635Csi Torque:
Approx. 225 lb-ft @ 3500 rpm (US Spec), 232 lb-ft @ 4000 rpm (Euro Spec)
Fuel Injection Systems:
Bosch L-Jetronic and Motronic fuel injection systems; M6 features individual throttle bodies for enhanced performance.
Engine Configuration:
Naturally Aspirated Inline-6 Cylinder
Standard Transmission Offering:
4-speed automatic transmission (ZF 4HP22) was common, especially in North America.
Optional Transmission Offering:
5-speed manual transmission (Getrag 265) was available, particularly on 635CSi and M6 models in certain markets.
Transmission Cooling:
Automatic transmissions typically feature an integrated transmission fluid cooler, often routed through the radiator. Manual transmissions generally do not have external coolers.
Transmission Gear Ratios Note:
Specific gear ratios vary by transmission type (manual/automatic) and model year. Detailed ratios are provided within the manual.
Wheelbase:
2,784 mm (109.6 in)
Length:
4,750–4,800 mm (187.0–189.0 in) depending on model and year
Width:
1,770 mm (69.7 in)
Height:
1,370–1,390 mm (53.9–54.7 in)
Front Track:
Approx. 1,440 mm (56.7 in)
Rear Track:
Approx. 1,440 mm (56.7 in)
Curb Weight Estimate:
1,600–1,750 kg (3,527–3,858 lb) depending on configuration
Gross Vehicle Weight Rating:
Approx. 2,100-2,200 kg (Consult vehicle-specific VIN plate for exact GVWR)
Safety Ratings Historical:
As a car from this era, formal crash test ratings (like NHTSA or IIHS) were less comprehensive than today. Vehicles were designed to meet existing safety standards of their time, often focusing on passive safety features.
Active Safety Features:
Anti-lock Braking System (ABS) became available and standard on later models, particularly M6. Power-assisted steering.
Passive Safety Features:
Reinforced passenger cell, crumple zones, padded interior surfaces, three-point seat belts (often automatic or inertia-reel), head restraints, optional driver's side airbag (later production years).
Seat Belt Type:
Three-point inertia reel seat belts for front occupants, two-point lap belts for rear occupants.
Infotainment System Era:
Period-appropriate technology, typically consisting of an analog or digital tuner radio, cassette player. Later models may have offered rudimentary trip computers.
Climate Control System:
Manual or automatic climate control systems were available, featuring integrated heating, ventilation, and air conditioning (HVAC) with adjustable fan speeds and temperature settings. Recirculation modes and defrost functions are standard.
Driver Assistance Features:
ABS (Anti-lock Braking System) was the primary driver assistance system introduced during this period. Cruise control was a common option.
Connectivity Features Era:
Limited to analog communication systems if equipped, such as early cellular phone integration in later models, but not the modern sense of connectivity.
Oil Change Interval Typical:
Every 5,000-7,500 miles or 6-12 months, depending on driving conditions. Consult manual for specific intervals.
Transmission Fluid Change:
Automatic: Every 30,000-50,000 miles. Manual: Every 60,000-100,000 miles or as per manual. BMW specified lifetime fluid for some units, but regular changes are recommended for longevity.
Spark Plug Replacement:
Typically every 30,000 miles, depending on spark plug type (e.g., standard copper vs. platinum/iridium).
Engine Oil Specification:
API SF/SG or higher, viscosity grade typically 10W-40 or 20W-50 depending on climate. Refer to manual for exact BMW specifications and capacities (approx. 6.5 liters).
Coolant Specification:
BMW's blue ethylene glycol based coolant or equivalent. Capacity approx. 10-12 liters. Always use a 50/50 mix with distilled water.
Automatic Transmission Fluid:
Dexron II or equivalent for ZF 4HP22. Capacity approx. 4-5 liters for a drain and fill.
Manual Transmission Fluid:
Gear oil, typically API GL-4 or GL-5, viscosity SAE 75W-90 or 80W-90. Capacity approx. 1.5-2 liters.
Brake Fluid Specification:
DOT 3 or DOT 4. High-performance vehicles may recommend DOT 4 LV.
Power Steering Fluid:
BMW approved power steering fluid or ATF Dexron II/III. Consult manual for specific BMW fluid P/N.
Engine Common Problems:
Head gasket leaks, oil pan gasket leaks, valve stem seal wear leading to oil consumption, timing chain tensioner wear, fuel distributor issues on L-Jetronic models, Idle Control Valve (ICV) problems.
Suspension Common Problems:
Worn control arm bushings, ball joints, tie rod ends, sagging springs, worn shock absorbers.
Electrical Common Problems:
Corroded wiring harnesses (especially in engine bay), failing instrument cluster gauges, headlight switch issues, aging relays and solenoids.
Body Common Problems:
Rust, particularly around wheel arches, rocker panels, door bottoms, and sunroof. Deteriorating rubber seals and trim.
Transmission Common Problems:
Automatic transmission may exhibit delayed shifts or slipping; manual clutch wear; driveshaft guibo (flex disc) degradation; differential leaks or bearing noise.
Brand Heritage:
BMW has a long-standing reputation for producing high-performance, driver-focused luxury vehicles. The 6 Series lineage traces back to earlier grand touring coupes like the E9 (3.0 CS/CSi).
Model Evolution E24:
The E24 was introduced in 1976 as the successor to the E9. It underwent a significant facelift in 1982, which included revised styling (particularly the 'shark nose' front end), improved aerodynamics, and updated interior. The manual covers the post-facelift models.
M6 Distinction:
The M6 (or M635CSi in Europe) represents the high-performance variant, featuring a more powerful engine derived from BMW's motorsport division, upgraded suspension, brakes, and aerodynamic enhancements.
Production Period:
1976–1989. The manual specifically targets the latter half of this production run (1983-1989).
Production Locations:
Primarily manufactured in Germany.
