86 10... Troubleshooting On Multi-Trailer
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.
TROUBLESHOOTING CHART
| Fault | Cause | Remedy |
|---|---|---|
| Trailer already brakes when foot is taken off accelerator | Shock absorber of overrunning equipment faulty | Replace shock absorber of overrunning equipment |
| Reversing sluggish or not possible
NOTE:
When automatic reversing is activated, there is a residual braking torque caused by the design. This results in slightly heavier overrunning.
|
Brake system adjusted too strongly | Adjust brake system |
| Brake shoes jammed | Free brake shoes, replace complete brake shoes with brake shoe carrier if necessary | |
| Cables overtensioned | Adjust brake system | |
| Handbrake effect too weak | Faulty adjustment | Adjust brake system |
| Faulty spring force accumulator | Adjust spring force accumulator | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Wheel brakes overheating | Brake system incorrectly adjusted | Adjust brake system |
| Overrunning equipment is sluggish | Lubricate overrunning equipment | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Cables overtensioned | Adjust brake system | |
| Wheel brakes contaminated | Clean wheel brakes | |
| Reversing lever of overrunning equipment jammed | Remove reversing lever, clean and grease with conventional BMW lubricants | |
| Braking effect too weak | Excessive play in brake system | Adjust brake system |
| Brake linings glazed, fouled by oil, damaged or worn | Replace complete brake shoes, clean brake drums, replace if necessary | |
| Overrunning equipment is sluggish | Lubricate overrunning equipment | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Jolting braking or starting off | Excessive play in brake system | Adjust brake system |
| Shock absorber of overrunning equipment faulty | Replace shock absorber of overrunning equipment | |
| Brake shoes jammed | Replace complete brake shoes with brake shoe carrier | |
| Brakes squeal or rattle | Wheel brakes contaminated or worn | Clean wheel brakes, replace brake shoes and/or brake drums if necessary |
| Out-of-round or banging brake drum | Replace brake drums | |
| Pad loose | Replace brake shoes | |
| Wheel-bearing play excessive | Replace wheel bearings | |
| Brakes pull to one side | Tire pressure incorrect | Correct tire pressure |
| Brake linings glazed, fouled by oil, damaged or worn | Replace complete brake shoes, clean brake drums, replace if necessary | |
| Suspension shock absorber has no effect | Replace suspension shock absorber | |
| Brake pads worn at angle | Wheel-bearing play excessive | Replace wheel bearings |
| Pads worn to less than minimum thickness | Replace brake shoes | |
| Towing attachment fails to engage after connection | Internal attachment parts contaminated | Clean and lubricate attachment |