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 MANUALSBMW2004325CI CONVERTIBLE (E46) L6-2.5L (M54)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCHECKING BRAKES ON TEST STAND
2004 BMW 325Ci Convertible (E46) L6-2.5L (M54)
Checking Brakes on Test Stand
2004 BMW 325Ci Convertible (E46) L6-2.5L (M54)SECTION Checking Brakes on Test Stand
Note:
1. Check tires for damage
2. Check tire treads
3. Check tire pressures
On cars equipped with ASC+T or DSC, the system must be deactivated with the switch. ASC+T/DSC indicator lamp in instrument cluster must light up!
The brakes must be at normal operating temperature. To achieve this, brake the car several times to slightly warm and dry brake disks and drums.
Caution:
You should only use brake dynamometers whose test speed is < 5 km/h.
You must follow without fail the guidelines contained in the operating instructions of the relevant test stand manufacturer.
Failure to do so may result in damage to the vehicle and the system and also personal injury.
The maximum test duration for four-wheel drive vehicles is 3 minutes per axle! If the test has to be repeated, the vehicle must in the meantime be driven over a distance of at least 1 km to ensure that the transfer case is sufficiently lubricated.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.