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Owner's Manual Cadillac BLS - IFS Europe BV

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460_OM_MY09.book Page 140 Wednesday, April 2, 2008 10:32 AM<br />

140 Starting and driving<br />

Lock-up<br />

The transmission’s torque converter has a<br />

so-called lock-up function. This means that<br />

in gear, the torque converter is locked in,<br />

which reduces engine speed and fuel consumption.<br />

Kick-down<br />

When the accelerator is pressed down fully,<br />

a down change is made to optimize<br />

acceleration, e.g. for overtaking.<br />

Following this, the next higher gear will be<br />

selected at the optimum engine speed or, if<br />

you ease off the accelerator, before<br />

reaching this.<br />

Driving with a heavy load on hilly<br />

roads<br />

The transmission fluid can overheat when<br />

the gearbox is strained, for example, when<br />

driving with a caravan on hilly roads. To<br />

avoid the transmission fluid overheating,<br />

always drive with the selector lever in the<br />

D position. The adaptive gear change patterns<br />

are then active.<br />

High air temperatures or a faulty oil cooler<br />

can also cause the transmission fluid to<br />

overheat. Overheating reduces the service<br />

life of the fluid.<br />

WARNING<br />

Remember to use the braking effect of the<br />

engine (1st, 2nd or 3rd gear) when you<br />

are descending long or steep hills to<br />

spare the brakes.<br />

Overheating can cause the brakes to<br />

fade!<br />

Towing<br />

Towing of cars with automatic transmission,<br />

see page 167.<br />

Descending hills<br />

If the speed of the car increases while<br />

descending a steep hill, despite the accelerator<br />

being released, the control module will<br />

change down. If you desire more powerful<br />

engine braking, manually select a lower<br />

gear, see page 143.<br />

Limp-home<br />

NOTICE<br />

Do not tow a caravan or trailer if limphome<br />

mode is engaged.<br />

If the transmission malfunctions, the control<br />

module will activate limp-home mode.<br />

Driveability will be affected to varying<br />

degrees.<br />

the following message then appears on<br />

the DIC:<br />

Gearbox malfunction.<br />

Limited performance.

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