BMW E60 Webasto won't start or locks out
Why does the E60 Webasto not start or lock out?
The Webasto locks itself out when starting fails in a fault state three times. The most common cause is a faulty auxiliary water pump (circulation pump), so the water does not circulate. A fault in the combustion air blower, the glow element or the control board can also prevent starting.
What is checked first when the Webasto does not ignite?
The tank must have enough fuel (range over 50 km) and the battery charge must be sufficient. Check the fuse and the Webasto connectors. The pump is on the driver's side inside the front wing; its brushes wear and the pump often breaks eventually.
How is the Webasto lockout cleared?
The lockout of a factory-fitted Webasto cannot be cleared by removing a fuse. It requires BMW's diagnostic software (INPA or ISTA), with which the lockout is cleared after the fault has been repaired. If the fault is not repaired, the lockout returns after a few start attempts.
What do the Webasto fault codes mean?
Code 009B2E means a locked-out heater. 009B2C points to the glow element, and 009B31 to flame monitoring: the glow element also works as the flame sensor, so the glow element is replaced. 009B28 means a control unit fault, and the control board can usually be repaired. A blower fault stops the unit.