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Car Indicator relay

Flasher relay from leading manufacturers

  • BOSCH indicator relay catalogue
  • FEBI BILSTEIN indicator relay catalogue
  • VALEO indicator relay catalogue
  • TOPRAN indicator relay catalogue
  • SWAG indicator relay catalogue
  • JP GROUP indicator relay catalogue
  • HELLA indicator relay catalogue
  • MAHLE ORIGINAL indicator relay catalogue
  • MEAT & DORIA indicator relay catalogue
  • VEMO indicator relay catalogue
  • TRISCAN indicator relay catalogue
  • AKS DASIS indicator relay catalogue
  • MEYLE indicator relay catalogue
  • ERA indicator relay catalogue
  • HERTH+BUSS ELPARTS indicator relay catalogue
  • ACKOJA indicator relay catalogue
  • GEBE indicator relay
  • Borsehung indicator relay
  • ESEN SKV indicator relay
  • S-TEC indicator relay

Your Indicator relay worn out? » Read more about common malfunctions • Repair • Replacement manual

Impulse generator for signalling system: the indicator flasher relay

The indicator flasher relay is a traditional car component and has been in use since decades, precisely regulating the turn indicator's signalling system. The typical flashing enhances the signalling effect of the yellow lights on both sides of the car. In case of failure, a new flasher relay as a component is easy to find and to replace.

Indicator relay functions

Operation the turn indicator is just one of the relay's functions. It reliably fulfills three tasks:

  • regulating the turn signal frequency
  • operating all blinkers simultaneously in case of emergency
  • signalling a defective bulb.

The turn indicators are fixed on the car's front wings. When changing direction on crossroads, motorway exits and entries, T-junctions, the driver is obliged to announce his intended change of direction to the other traffic participants by switching on the turn indicator with the turn signal lever. The indicator flasher relay switches the characteristic ½ second per cycle frequency. The warning flasher function serves as emergency signalling. A simple pressure switch activates all of the car's blinkers when pressed, enabling incapacitated or accident cars to make themselves seen. In risky situations, e.g. in case of a traffic congestion, the flashing signal can be used to alert the rear traffic on the motorway to slow down. Relatively unknown is the third function of the turn indicator relay. It warns for a defective bulb by changing its signal frequency. If the turn indicator is activated on the side of the defective bulb, the frequency doubles. This is clearly visible and audible for the driver, enabling him to quickly identify and repair the defective lamp.

Turn indicator relay defects

The accelerated flashing signal does not indicate a defective flasher relay. In this case, the relay functions correctly and the fault lies with the bulb. A defective relay does not initiate any signal at all. It is an electromechanical component, which can burn out as a result of penetrating moist or voltage peaks. Repair is usually not possible and never recommended. The component is easy to find and to replace.

Flasher relay: installation, location and repair

The turn indicator flasher relay is usually located in the fuse box. A car has several relays installed and therefore it is important to be certain about the exact location. It is a small, black cube connected to a socket with plug contacts. The fuse box cover provides information which relay is responsible for the turn indicator signal. Its repair is just as easy: the relay is pulled out and the spare part is inserted in the same place – done. Nevertheless, the turn indicator flasher relay is a safety-relevant component. If a defect occurs and no garage is in the neighbourhood, a little trick might help: The relay unit is removed and opened. The actual relay sits in another cube, soldered on the component's circuit board. Being an electromechanical component, it is possibly just jammed. Knocking a few times on the actual relay could help here. With a bit of luck, the jamming is loosened and the relay functions normally for now. Another tip for removing the relay: the exact position can be found in the operation manual under "fuses". It is usually installed in proximity of the fuse box or the control unit. Alternatively, it can have a totally different location, e.g. behind a switch. If the unit has to be removed from the dashboard, there is a considerable risk of scratching the cover as well as the dashboard. An ice scraper can assist removing the turn indicator flasher relay without damage.

Buying a flasher relay

A new turn indicator flasher relay costs between 10 and 40 EUR ( ±£9 - £36) at most. Make sure it is a branded quality component to ensure its lasting operation. If a relay fails untimely, the car should be checked on faulty current. In the worst case, an unidentified source of voltage peaks can lead to cable fire. Therefore a cause investigation is always part of a failing turn indicator flasher relay.


Car indicator relay : best-selling products
Indicator relay
HELLA 4DM 003 360-021 flasher unit
  • Mounting Type: Plugged
  • Operating Mode: Electronic
  • Switching Capacity [W]: 2+1(6)x21W+5 EP
  • Number of pins: 4
  • Voltage [V]: 12
  • Supplementary Article / Supplementary Info Info 2: for trailer
  • Supplementary Article / Supplementary Info: with holder
  • Temperature range from [°C]: -40
  • Temperature range to [°C]: 85
  • Registration Type: ECE approved
  • Assy./disassy. by qualified personnel required!
  • Condition:  new
4DM 003 360-021 HELLA replacement car indicator relay price
HELLA | 4DM 003 360-021
£ 24,40
Condition:  new
Indicator relay
QUINTON HAZELL XFL105 flasher relay
  • Operating Mode: Electric
  • Mounting Type: Plugged
  • Length [mm]: 39
  • Width [mm]: 61
  • Height [mm]: 39
  • Voltage [V]: 12
  • Number of pins: 4
  • Current Strength [A]: 92
  • Condition:  new
XFL105 QUINTON HAZELL replacement car indicator relay price
QUINTON HAZELL | XFL105
£ 20,03
Condition:  new
Indicator relay
MAHLE ORIGINAL MFL 6 indicator relay
  • Relay function: Indicator
  • Rated Voltage [V]: 12
  • Switching Capacity [W]: 2(4)X21W+0..4W
  • Number of pins: 4
  • Supplementary Article / Supplementary Info: with holder
  • Packaging width [cm]: 3,20
  • Packaging length [cm]: 3,9
  • Net Weight [g]: 32
  • Packaging height [cm]: 5,50
  • Condition:  new
MFL 6 MAHLE ORIGINAL replacement car indicator relay price
MAHLE ORIGINAL | MFL 6
£ 10,01
Condition:  new
Flasher Unit
HELLA 4AZ 003 787-051 flasher unit
  • Mounting Type: mounting, Plugged
  • Switching Capacity [W]: 110, 1-5 x 18/21
  • Number of pins: 4
  • Voltage [V]: 6
  • Supplementary Article / Supplementary Info: with holder
  • Operating Mode: Electronic
  • Assy./disassy. by qualified personnel required!
  • Condition:  new
4AZ 003 787-051 HELLA replacement car indicator relay price
HELLA | 4AZ 003 787-051
£ 23,33
Condition:  new
Indicator relay
HERTH+BUSS ELPARTS 75605096 flasher relay
  • Operating Mode: Electronic
  • Rated Voltage [V]: 12
  • Switching Capacity [W]: 2 + 1/6 x 21 + 5
  • Connector type: 4 x 6,3 mm, 2 x 2,8 mm
  • Plug Type: Blade Terminal
  • Width [mm]: 30
  • Height [mm]: 30
  • Depth [mm]: 30
  • Mounting Type: Plugged
  • Number of pins: 4
  • Condition:  new
75605096 HERTH+BUSS ELPARTS replacement car indicator relay price
HERTH+BUSS ELPARTS | 7...
£ 19,09
Condition:  new
Indicator relay
VEMO V15-71-0023 indicator relay
  • Voltage [V]: 12
  • Operating Mode: Electric
  • Vehicle Equipment: for vehicles with trailer hitch
  • Number of pins: 4
  • Weight [kg]: 0,023
  • Product line: Q+, original equipment manufacturer quality MADE IN GERMANY
  • Packaging width [cm]: 2,952
  • Packaging height [cm]: 4,176
  • Packaging Depth [cm]: 2,952
  • Condition:  new
V15-71-0023 VEMO replacement car indicator relay price
VEMO | V15-71-0023
£ 19,03
Condition:  new
Indicator relay
FEBI BILSTEIN 40910 flasher unit
  • Voltage [V]: 12
  • Number of connectors: 4
  • Colour: black
  • Operating Mode: Electric
  • Weight [kg]: 0,01
  • Current Strength [A]: 22
  • Condition:  new
40910 FEBI BILSTEIN replacement car indicator relay price
FEBI BILSTEIN | 40910
£ 6,64
Condition:  new
Indicator relay
HERTH+BUSS ELPARTS 75605148 flasher relay
  • Operating Mode: Electronic
  • Rated Voltage [V]: 12
  • Switching Capacity [W]: 2/4 x 21 + 5
  • Connector type: 3 x 6,3 mm
  • Plug Type: Blade Terminal
  • Height [mm]: 30
  • Width [mm]: 30
  • Depth [mm]: 30
  • Mounting Type: Plugged
  • Number of pins: 3
  • Weight [g]: 45
  • Condition:  new
75605148 HERTH+BUSS ELPARTS replacement car indicator relay price
HERTH+BUSS ELPARTS | 7...
£ 10,64
Condition:  new
Indicator relay
BOSCH 0 335 200 038 indicator relay
  • Length [mm]: 30,5
  • Width [mm]: 30,5
  • Height [mm]: 57
  • Operating Mode: Electric
  • Vehicle Equipment: for vehicles without trailer hitch
  • Condition:  new
0 335 200 038 BOSCH replacement car indicator relay price
BOSCH | 0 335 200 038
£ 20,95
Condition:  new
Indicator relay
AUTOMEGA 150003010 flasher unit
  • Operating Mode: Electric
  • Voltage [V]: 12
  • Rated Power [W]: 21
  • Condition:  new
150003010 AUTOMEGA replacement car indicator relay price
AUTOMEGA | 150003010
£ 5,16
Condition:  new
Indicator relay
HELLA 4DB 007 218-001 flasher relay
  • Mounting Type: Plugged
  • Operating Mode: Electronic
  • Switching Capacity [W]: 2(4)x21W+5 E, 2(4)x21W+5 E
  • Number of pins: 4
  • Voltage [V]: 12
  • Temperature range from [°C]: -40
  • Temperature range to [°C]: 70
  • Assy./disassy. by qualified personnel required!
  • Condition:  new
4DB 007 218-001 HELLA replacement car indicator relay price
HELLA | 4DB 007 218-001
£ 15,02
Condition:  new
Indicator relay
FEBI BILSTEIN 11574 indicator relay
  • Relay Number: 21, 191
  • Voltage [V]: 12
  • Rated Power [W]: 21
  • Number of connectors: 3
  • Colour: black
  • Material: Plastic
  • Operating Mode: Electronic
  • Weight [kg]: 0,032
  • Condition:  new
11574 FEBI BILSTEIN replacement car indicator relay price
FEBI BILSTEIN | 11574
£ 6,82
Condition:  new