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Ford Focus: gearbox, ECU problems, and common faults

The third generation of Ford's successful model was launched in 2011. The well-balanced chassis and the skilfully tuned steering provide a lot of driving enjoyment, especially when it is equipped with one of the more powerful turbo engines. Just like most vehicles, it’s not perfect and has some problems which have commonly been reported. Let’s take a look at what some of those are.

1.6 petrol engine and diesel problems

The petrol engine range is known for its longevity, which can easily cope with high mileage, provided that the recommended regular maintenance schedule has been adhered to. Nevertheless, some typical weak points must be expected in the vehicles, some of which are over twenty years old. These include a dirty idle control valve which can lead to idle fluctuations, defective thermostat housing, defective ignition coils, and leaking exhaust manifolds. Many of these problems can be remedied with quality Ford Focus spare parts. The diesel engines are basically no worse off. There are occasional failures of the injection pump, and defective turbochargers and camshaft sensors are a nuisance from time to time.

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Parts Details
  • Product line: S4
  • Battery Capacity [Ah]: 60
  • Battery: Lead-acid battery
  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 540
  • Length [mm]: 242
  • Width [mm]: 175
  • Height [mm]: 175
  • Voltage [V]: 12
  • DIN / ISO: LB2
  • Terminal Type: 1
  • BOSCH: Battery
  • Item number: 0 092 S40 040
  • Our price: £ 89,81
  • Condition: New
Details
BOSCH Battery
Article number: 0 092 S40 040
£ 89,81
price incl. 20% VAT, free delivery
110TE EXIDE PREMIUM EA852 Battery 12V 85Ah 800A B13 Lead-acid battery
Parts Details
  • Product line: PREMIUM
  • Battery Capacity [Ah]: 85
  • Battery: Lead-acid battery
  • Post Positions 0
  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 800
  • Length [mm]: 315
  • Width [mm]: 175
  • Height [mm]: 175
  • Voltage [V]: 12
  • DIN / ISO: LB4
  • Terminal Type: 1, EN
  • EXIDE: Battery
  • Item number: EA852
  • Our price: £ 89,66
  • Condition: New
Details
EXIDE Battery
Article number: EA852
£ 89,66
price incl. 20% VAT, free delivery
S4 010 BOSCH S4 0 092 S40 100 Battery 12V 80Ah 740A B13 Lead-acid battery
Parts Details
  • Product line: S4
  • Battery Capacity [Ah]: 80
  • Battery: Lead-acid battery
  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 740
  • Length [mm]: 315
  • Width [mm]: 175
  • Height [mm]: 175
  • Voltage [V]: 12
  • DIN / ISO: LB4
  • Terminal Type: 1
  • BOSCH: Battery
  • Item number: 0 092 S40 100
  • Our price: £ 114,90
  • Condition: New
Details
BOSCH Battery
Article number: 0 092 S40 100
£ 114,90
price incl. 20% VAT, free delivery
075TE EXIDE PREMIUM EA612 Battery 12V 61Ah 600A B13 Lead-acid battery
Parts Details
  • Product line: PREMIUM
  • Battery Capacity [Ah]: 61
  • Battery: Lead-acid battery
  • Post Positions 0
  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 600
  • Length [mm]: 242
  • Width [mm]: 175
  • Height [mm]: 175
  • Voltage [V]: 12
  • DIN / ISO: LB2
  • Terminal Type: 1, EN
  • EXIDE: Battery
  • Item number: EA612
  • Our price: £ 75,72
  • Condition: New
Details
EXIDE Battery
Article number: EA612
£ 75,72
price incl. 20% VAT, free delivery
LPG5 NGK LPG Laser Line 1516 Spark plug CNG/LPGM14 x 1,25, Spanner Size: 16 mm
Parts Details
  • Spanner Size: 16 mm
  • Product line: LPG Laser Line
  • Spark Plug: Iridium Middle Electrode, Fixed SAE connector
  • Thread Length [mm]: 17,5
  • Thread Size: M14 x 1,25
  • Fuel Type: CNG / LPG
  • Recommended change interval [km]: 60000
  • NGK: Spark plug
  • Item number: 1516
  • Condition: New
Details
NGK Spark plug
Article number: 1516
£ 18,25
(Price per item)
price incl. 20% VAT, excl. delivery costs

Automatic gearbox problems

Some drivers have reported a shudder or jerk when changing gears, particularly at low speeds. Failure to engage gears: In some cases, the automatic transmission in the Ford Focus may fail to engage gears, leaving the vehicle unable to move. Transmission slipping: This is when the transmission fails to maintain the appropriate gear, causing the engine to rev without a corresponding increase in vehicle speed. Delayed shifting: In some cases, the Ford Focus automatic transmission may take longer than usual to shift between gears, causing a delay in acceleration.

1.6 TDCI injector problems

If you’ve been reading automotive forums, you’ve probably come across complaints about injector leakage which can occur when the injector's sealing mechanism fails, allowing fuel to leak into the engine compartment. Injectors can become clogged with debris, resulting in reduced fuel flow and poor engine performance. The high-pressure fuel pump that supplies fuel to the injectors can malfunction, leading to a loss of power and other performance issues. If you need to replace the injector, you can find out more about Ford Focus injector prices and get the right one for your specific vehicle.

ford focus 1.6 tdci injector problems

ECU problems

The engine control unit relies on various sensors throughout the car to monitor and control engine performance. If one of these sensors malfunctions, it can cause the ECU to send incorrect signals to the engine, resulting in poor performance and reduced fuel efficiency. Wiring and connection problems can cause the ECU to malfunction, resulting in a range of engine problems including misfiring, stalling, and reduced power. Like any computer system, the ECU is subject to glitches and bugs that can cause it to malfunction or fail completely.

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Parts Details
  • Length [mm]: 650, 400
  • Wiper blade type: Beam
  • Quantity Unit: Kit
  • Product line: Aerofit
  • BOSCH: Wiper blade
  • Item number: 3 397 014 226
  • Our price: £ 18,57
  • Condition: New
Details
BOSCH Wiper blade
Article number: 3 397 014 226
£ 18,57
price incl. 20% VAT, excl. delivery costs
PTR5A-13 NGK V-Line 7586 Spark plug M14 x 1,25, Spanner Size: 16 mm
Parts Details
  • Spanner Size: 16 mm
  • Product line: V-Line
  • Spark Plug: Platinum Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with taper gasket seat, Fixed SAE connector
  • Thread Length [mm]: 25,0
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • NGK: Spark plug
  • Item number: 7586
  • Condition: New
Details
NGK Spark plug
Article number: 7586
£ 11,76
(Price per item)
price incl. 20% VAT, excl. delivery costs
E43 VARTA BLUE dynamic E43 5724090683132 Battery 12V 72Ah 680A B13 Lead-acid battery
Parts Details
  • Version: E43
  • Product line: BLUE dynamic
  • Battery Capacity [Ah]: 72
  • Battery: Lead-acid battery
  • Post Positions 0
  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 680
  • Length [mm]: 278
  • Width [mm]: 175
  • Height [mm]: 175
  • Voltage [V]: 12
  • Observe service information
  • Weight [kg]: 17,05
  • DIN / ISO: LB3
  • Terminal Type: 1
  • VARTA: Battery
  • Item number: 5724090683132
  • Our price: £ 100,63
  • Condition: New
Details
VARTA Battery
Article number: 5724090683132
£ 100,63
price incl. 20% VAT, free delivery
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0 002 630 701 BERU ULTRA Z177 Spark plug 14 KR-8 MUV, M14x1,25, Spanner Size: 16 mm
Parts Details
  • Electrode Gap [mm]: 1,3
  • Spanner Size: 16 mm
  • Product line: ULTRA
  • Spark Plug: 1 - Earthed Electrode, with taper seat
  • Thread Length [mm]: 25
  • Thread Size: M14x1,25
  • Connector type: SAE
  • Technical Information Number: 14 KR-8 MUV
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • BERU: Spark plug
  • Item number: Z177
  • Condition: New
Details
BERU Spark plug
Article number: Z177
RRP

RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.

£ 7,62
£ 3,38
(Price per item)
price incl. 20% VAT, excl. delivery costs
LPG4 NGK LPG Laser Line 1511 Spark plug CNG/LPGM14 x 1,25, Spanner Size: 16 mm
Parts Details
  • Spanner Size: 16 mm
  • Product line: LPG Laser Line
  • Spark Plug: Iridium Middle Electrode, Fixed SAE connector
  • Thread Length [mm]: 25,0
  • Thread Size: M14 x 1,25
  • Fuel Type: CNG / LPG
  • Recommended change interval [km]: 60000
  • NGK: Spark plug
  • Item number: 1511
  • Condition: New
Details
NGK Spark plug
Article number: 1511
£ 19,41
(Price per item)
price incl. 20% VAT, excl. delivery costs

We generally recommend that you have your Ford Focus ECU repaired or replaced by a professional mechanic or an authorised dealer. They will have the expertise and experience to diagnose any problems with the component and recommend the best course of action. In some cases, the ECU may need to be reprogrammed or completely replaced to rectify any problems.

Other reported issues

In addition to the above, some car owners have experienced problems with the Ford Focus clutch and convertible roof. It's important to note that not all models have experienced these problems and some of these issues may have been addressed in later model years. If you're considering buying a used Ford Focus, it's always a good idea to have a professional mechanic inspect the vehicle before making a purchase.

Useful videos on this topic:

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SILZNAR8C7H NGK 93593 Spark plug M12 x 1,25, Spanner Size: 14 mm
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  • Spark Plug: Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with taper gasket seat, Fixed SAE connector
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  • Battery Capacity [Ah]: 85
  • Battery: Lead-acid battery
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  • Hold-down Type: B13
  • Cold-test Current, EN [A]: 800
  • Length [mm]: 315
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AP 700 U BOSCH Aerotwin 3 397 006 953 Wiper blade 700 mm, Beam, 28 Inch
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  • Wiper blade type: Beam
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  • BOSCH: Wiper blade
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TR5B-13 NGK 4559 Spark plug M14 x 1,25, Spanner Size: 16 mm
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  • BOSCH: Battery
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LPG7 NGK LPG Laser Line 1640 Spark plug CNG/LPGM14 x 1,25, Spanner Size: 16 mm
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  • Product line: LPG Laser Line
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  • Thread Length [mm]: 26,5
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  • Fuel Type: CNG / LPG
  • Recommended change interval [km]: 60000
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063TE EXIDE PREMIUM EA472 Battery 12V 47Ah 450A B13 Lead-acid battery
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Parts Details
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