Question 1

What is the Oil Sludge (B205/B235) issue on the Saab 9-5 OG?

Accepted Answer

Identical issue to the 9-3 OG; the 9-5 is actually more prone to this due to higher engine bay temperatures. Symptoms include: Turbo failure, Tapping noise from top end, Oil light flicker. Estimated repair cost: £300–£2,500.

Question 2

What is the ACC Blend Door Failure issue on the Saab 9-5 OG?

Accepted Answer

The plastic arm or shaft for the heater blend door snaps, leaving one side of the car at the wrong temperature. Symptoms include: Fault code 08 or 11 on ACC display, Inconsistent cabin temperature. Estimated repair cost: £100–£400.

Question 3

What is the Rear Trailing Arm Bushes issue on the Saab 9-5 OG?

Accepted Answer

Worn rear bushes lead to poor tracking and high tyre wear. Symptoms include: "Ghost steering" from the rear, Knocking over speed bumps. Estimated repair cost: £200–£400.

Question 4

What is the Turbocharger Failure issue on the Saab 9-5 OG?

Accepted Answer

All 9-5 engines use a turbocharger, and lack of maintenance or oil sludge can cause premature turbo bearing failure. A blown turbo can send oil into the intake or exhaust, causing smoke and potential engine damage. Symptoms include: White/blue smoke from exhaust, Sudden loss of power, Whistling or siren noise from engine bay, Oil consumption increase. Estimated repair cost: £800–£2,000.

Question 5

What is the Timing Chain Rattle (4-Cylinder Engines) issue on the Saab 9-5 OG?

Accepted Answer

The timing chains on B205/B235 engines can stretch and rattle, especially on cold start. If the chain tensioner fails, the chain can skip teeth and cause valve-piston contact. Symptoms include: Rattling noise on cold start, Engine management light, Poor idle quality. Estimated repair cost: £500–£1,500.

Saab 9-5 OG Problems by Year

Select a Year Period

Browse Saab 9-5 OG in our Directory

Buying Tips for the Saab 9-5 OG